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21 pages of text, with notes and 2 figures bound in blue paper covers represented to Sir Henry James, by author T.F. de Schubert., Printed in vi, 62 pages, with 7 plates. Includes table of contents, text, and manuscript letters and notes. Accompanied by 21+2 pages of text, note and figure, titled: Sur l'Influence des attractions locales dans les Operations Geodesiques ... Par Le General de l'Infantierie T.F. de Schubert ... Altona, 1860. Bound in light brown leather covers, with "Extension of the triangulation of the Ordnance Survey into France and Belgium" and a decorative border stamped in gilt. Noted in introduction: "All computations here given have, been made by or under the immediate superintendence of Captain alexander Ross Clarke, R.E."

Uncolored view of scaffold., Printed in vi, 62 pages, with 7 plates. Includes table of contents, text, and manuscript letters and notes. Accompanied by 21+2 pages of text, note and figure, titled: Sur l'Influence des attractions locales dans les Operations Geodesiques ... Par Le General de l'Infantierie T.F. de Schubert ... Altona, 1860. Bound in light brown leather covers, with "Extension of the triangulation of the Ordnance Survey into France and Belgium" and a decorative border stamped in gilt. Noted in introduction: "All computations here given have, been made by or under the immediate superintendence of Captain alexander Ross Clarke, R.E."

Uncolored view of platform in Dunkirk, Northern France., Printed in vi, 62 pages, with 7 plates. Includes table of contents, text, and manuscript letters and notes. Accompanied by 21+2 pages of text, note and figure, titled: Sur l'Influence des attractions locales dans les Operations Geodesiques ... Par Le General de l'Infantierie T.F. de Schubert ... Altona, 1860. Bound in light brown leather covers, with "Extension of the triangulation of the Ordnance Survey into France and Belgium" and a decorative border stamped in gilt. Noted in introduction: "All computations here given have, been made by or under the immediate superintendence of Captain alexander Ross Clarke, R.E."

Bulletin, letters, and notes by various authors, dated 1857-1868., Printed in vi, 62 pages, with 7 plates. Includes table of contents, text, and manuscript letters and notes. Accompanied by 21+2 pages of text, note and figure, titled: Sur l'Influence des attractions locales dans les Operations Geodesiques ... Par Le General de l'Infantierie T.F. de Schubert ... Altona, 1860. Bound in light brown leather covers, with "Extension of the triangulation of the Ordnance Survey into France and Belgium" and a decorative border stamped in gilt. Noted in introduction: "All computations here given have, been made by or under the immediate superintendence of Captain alexander Ross Clarke, R.E."

Uncolored view of platform in Cassel., Printed in vi, 62 pages, with 7 plates. Includes table of contents, text, and manuscript letters and notes. Accompanied by 21+2 pages of text, note and figure, titled: Sur l'Influence des attractions locales dans les Operations Geodesiques ... Par Le General de l'Infantierie T.F. de Schubert ... Altona, 1860. Bound in light brown leather covers, with "Extension of the triangulation of the Ordnance Survey into France and Belgium" and a decorative border stamped in gilt. Noted in introduction: "All computations here given have, been made by or under the immediate superintendence of Captain alexander Ross Clarke, R.E."

Uncolored view of observatories and scaffolds., Printed in vi, 62 pages, with 7 plates. Includes table of contents, text, and manuscript letters and notes. Accompanied by 21+2 pages of text, note and figure, titled: Sur l'Influence des attractions locales dans les Operations Geodesiques ... Par Le General de l'Infantierie T.F. de Schubert ... Altona, 1860. Bound in light brown leather covers, with "Extension of the triangulation of the Ordnance Survey into France and Belgium" and a decorative border stamped in gilt. Noted in introduction: "All computations here given have, been made by or under the immediate superintendence of Captain alexander Ross Clarke, R.E."

Uncolored view of scaffold., Printed in vi, 62 pages, with 7 plates. Includes table of contents, text, and manuscript letters and notes. Accompanied by 21+2 pages of text, note and figure, titled: Sur l'Influence des attractions locales dans les Operations Geodesiques ... Par Le General de l'Infantierie T.F. de Schubert ... Altona, 1860. Bound in light brown leather covers, with "Extension of the triangulation of the Ordnance Survey into France and Belgium" and a decorative border stamped in gilt. Noted in introduction: "All computations here given have, been made by or under the immediate superintendence of Captain alexander Ross Clarke, R.E."

Uncolored view scaffold., Printed in vi, 62 pages, with 7 plates. Includes table of contents, text, and manuscript letters and notes. Accompanied by 21+2 pages of text, note and figure, titled: Sur l'Influence des attractions locales dans les Operations Geodesiques ... Par Le General de l'Infantierie T.F. de Schubert ... Altona, 1860. Bound in light brown leather covers, with "Extension of the triangulation of the Ordnance Survey into France and Belgium" and a decorative border stamped in gilt. Noted in introduction: "All computations here given have, been made by or under the immediate superintendence of Captain alexander Ross Clarke, R.E."

Printed in vi, 62 pages, with 7 plates. Includes table of contents, text, and manuscript letters and notes. Accompanied by 21+2 pages of text, note and figure, titled: Sur l'Influence des attractions locales dans les Operations Geodesiques ... Par Le General de l'Infantierie T.F. de Schubert ... Altona, 1860. Bound in light brown leather covers, with "Extension of the triangulation of the Ordnance Survey into France and Belgium" and a decorative border stamped in gilt. Noted in introduction: "All computations here given have, been made by or under the immediate superintendence of Captain alexander Ross Clarke, R.E." "5239".

Printed in vi, 62 pages, with 7 plates. Includes table of contents, text, and manuscript letters and notes. Accompanied by 21+2 pages of text, note and figure, titled: Sur l'Influence des attractions locales dans les Operations Geodesiques ... Par Le General de l'Infantierie T.F. de Schubert ... Altona, 1860. Bound in light brown leather covers, with "Extension of the triangulation of the Ordnance Survey into France and Belgium" and a decorative border stamped in gilt. Noted in introduction: "All computations here given have, been made by or under the immediate superintendence of Captain alexander Ross Clarke, R.E." "5239".

Uncolored map showing extension of the triangulation into England, France and Belgium., Printed in vi, 62 pages, with 7 plates. Includes table of contents, text, and manuscript letters and notes. Accompanied by 21+2 pages of text, note and figure, titled: Sur l'Influence des attractions locales dans les Operations Geodesiques ... Par Le General de l'Infantierie T.F. de Schubert ... Altona, 1860. Bound in light brown leather covers, with "Extension of the triangulation of the Ordnance Survey into France and Belgium" and a decorative border stamped in gilt. Noted in introduction: "All computations here given have, been made by or under the immediate superintendence of Captain alexander Ross Clarke, R.E."

Printed in vi, 62 pages, with 7 plates. Includes table of contents, text, and manuscript letters and notes. Accompanied by 21+2 pages of text, note and figure, titled: Sur l'Influence des attractions locales dans les Operations Geodesiques ... Par Le General de l'Infantierie T.F. de Schubert ... Altona, 1860. Bound in light brown leather covers, with "Extension of the triangulation of the Ordnance Survey into France and Belgium" and a decorative border stamped in gilt. Noted in introduction: "All computations here given have, been made by or under the immediate superintendence of Captain alexander Ross Clarke, R.E."

Two papers bound in one volume, 19 & 27 pages, 28 maps (some color) and plans. With 15 page manuscript notice demonstrating different printing methods: electrotype, photographic reduction, hill sketching, hill shading, engraving, lithography, zincography, and anastatic process. And 10 pages of insert at the end of volume. Includes indexes to the Ordnance Surveys of England and Wales, Scotland and Ireland. Bound in brown covers measuring 32.5x22, with "Report of the Ordnance Survey -- 1855-56." stamped in gold on the black leather spine. Treasury minute includes memorandum by Sir Charles Trevelyan, Lord Elcho, and Sir Henry James. Inside front cover: page signed by Henry James, L'General ... 1875. We have two copies of this volume and have combined variant images from both.

Triangulation connecting Greenwich and Dunkirk., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Uncolored map showing general diagram of the principal triangulation., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Uncolored view., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Uncolored map showing contours around Dunnose. Relief shown by contours and spot heights., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Three geologic cross-section. Includes "Table of the specific gravities of the rocks in Arthur's Seat., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Uncolored map of Great Britain. Includes references., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Figures 11 & 35. Details of Triagnulation., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Figure 12. Details of Triagnulation., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Uncolored map, with 2 insets: Projection of central section, and projection of central meridian section. Includes notes., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Diagram of Airy's zenith sector used between 1842-1850 for the determination of the latitudes of various trigonometrical stations used in the Ordnance Survey of the British Isles., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Uncolored diagrams with a profile (Fig.4), 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Uncolored diagrams., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Introduction to the 2 volumes by H. James., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

4 manuscripts and text from Chamber's Journal in Volume 1., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

List of contents, 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

List of published works of the Ordnance Survey., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Names of Officers., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Preface: 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Dedication note by Henry James to Lord Panmure, G.C.B, K.T. &c., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Manuscript associated with the book, reference to the introduction to the principal triangulation ..., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

2 manuscripts, associated with the book, with a note by Col. Sir E. James, published in Ordnance Survey. Abstracts ..., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Ramsden theodolite is a large theodolite that was specially constructed for use in the Ordnance Survey., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

Presentation plate inside front cover., 2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."

2 volumes present systematic exposition of the entire triangulation with an investigation of figures, dimensions and mean density of the earth. V. 1 Text: 782, [2] pages. Includes description of stations. Description of instruments. Reduction of observations. Observations, terrestrial and astronomical. Measurement of base lines. Principles of calculation. Reduction of the triangulation. Triangles and distances. Terrestrial zenith distances altitudes. Connection of geodetical and astronomical observations. Determination of the amount of local attraction at various astronomical stations in the triangulation. Determination of the spheroid most nearly representing the surface of Great Britain and Ireland. Of the length of the degree, etc., latitudes and longitudes and directions of the meridian at the different stations. Figure of the Earth. Bound in brown leather covers with gilt borders. Spine with gilt tooled raised band with "Ordnance Survey: Principal Triangulation" stamped in gilt. Accompanied by letters associated with book. V.2. 29 plate: including maps, figures and views. Bound in cloth covered boards. Spine stamped in gold with title " Ordnance Survey: Account of principal triangulation: Plates."