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By gas chromatography-mass spectrometry, 1H NMR , and synthesis of authentic standards, the secretion from the abdominal dorsal scent gland of male adults of Sphaerocoris annulus has been found to contain a mixture of C9aliphatic aldehydes: nonanal (3%), (Z)-4-nonenal (13%), (E)-4,8-nonadienal (23%) and (Z)-4,8-nonadienal (56%). A further component was tentatively iden­tified as 8-nonenal (5%).

The high resolution field desorption mass spectra of a number of glycosides are described. In all cases the spectra enabled molecular weights and elemental formulae to be established, and the presence of fragment ions due to cleavage of the sugar groups provides considerable assistance in the identification of sugar and aglycone moieties. The [M + 23Na]+ion was the base peak in the spectrum of the sodium salt of testosterone glucuronide, and the presence [M + 39K]+, [M + 41K]+and [M + 23Na]+ions in the spectra of other glycosides are attributed to the presence of their sodium or potassium salts as impurities.

The field ionization and electron impact mass spectra of eleven coumarins have been compared. In the field ion spectra the molecular ions were the base peaks and structurally diagnostic fragment ions formed by direct cleavage were present, whereas the molecular ions were weak in the electron impact spectra and fragment ions formed by rearrangement were dominant. Crude coumarin mixtures obtained from natural sources have been successfully examined using field ionization and gas chromatography + field ionization mass spectrometry.

Environmental Health Criteria, 43 Chlordecone, 44 Mirex, 45 Camphechlor. Geneva: World Health Organization, 1984. ISBN 92-4-154183-0, 92-4-154184-9, 92-4-154185-7.Rural Project Management: a handbook for students and practitioners. By V. Austin. London: Batsford Academic and Educational Ltd. 1985. pp. 280. ISBN 0-7134-4416-9. Price £14.95 (hardback).Social Anthropology and Development Policy. Edited by R. Grillo and A. Rew. London: Tavistock Publications, 1985. 208 pages incl. Index. ISBN: 0-422-79620-4. Price £7.95 paperback.Insect Pest Control, with Special Reference to African Agriculture. By R. Kumar. London: Edward Arnold (Publishers) Ltd, 1984, pp. 298. ISBN 0-7131-8083-8. Price £9.95.Annual Review of Phytopathology. Volume 23. Edited by R. James Cook et al. Palo Alto, California: Annual Reviews Inc., 1985. ISBN 0-8243-1323-2. Price $27.00 (U.S.A.), $30.00 (elsewhere).Vegetables in the Tropics. By H. D. Tindall. London: MacMillan, 1983. ISBN 0-333-24266-1. Price £35.00 hardback, ISBN 0-333-24266-8, £16 paperback.Pesticide Application: Principles and Practice. Edited by P. T. Haskell. Oxford: Clarendon Press, 1985, pp. 494. ISBN 0-19-854542-8. Price £50.00.Indigenous Agricultural Revolution. By Paul Richards, London: Hutchinson, 1985, pp. 192. ISBN 0-09-161320-5.Principles of Weed Control In California. Edited by E. A. Kurtz and F. O. Colbert. P.O. Box 9335, Fresno, California, CA 93791: Thomson Publications, 1985, pp. 474. ISBN 0-913702-32-3. Price: $29.95 (hardback).Handbook for Agricultural Pilots, 4th Edition. By H. R. Quantick. London: Collins, 1985, pp. xvii + 265. ISBN 0-00-383141-8. Price £12.95.Review of Biological Control of Pests in the Commonwealth Caribbean and Bermuda up to 1982. Editor M. J. W. Cock. Commonwealth Institute of Biological Control, Technical Communication No. 9. pp. 244. Slough: Commonwealth Agricultural Bureaux, July 1985. ISBN 0-85198-550-5. Price CAB member countries £35.00, non-member countries US$52.50.Economic Guidelines for Crop Pest Control. By K. H. Reichelderfer, G. A. Carlson and G. A. Norton. Rome: FAO, Plant Production and Protection Paper 58, 1984, pp. 93. ISBN 92-5-102109-0.The Pyrethroid Insecticides. Edited by J. P. Leahey. London: Taylor and Francis, 1985, pp. xi + 440. ISBN 0-85066-283-4. Price £45.00 (hardback).Handbook of Seed Technology for Genebanks. By R. H. Ellis, T. D. Hong and E. H. Roberts. Volume I. Principles and Methodology, pp. 210. ISBN 92-9043-118-0. Volume II. Compendium of Specific Germination Information and Test Recommendations, pp. 667. ISBN 91-9043-119-9. Rome: International Board for Plant Genetic Resources, 1985.Advances in Soil Science, Volumes 2 & 3. Edited by B. A. Stewart. Berlin: Springer-Verlag, 1985 a & b, pp. 235 + ix & 217 + ix. Vol. 2. ISBN 0-387-96114-3. Price £39.50 hardback. Vol. 3. ISBN 0-387-96116-X. Price £44.50, hardback.Boophilus microplus, the Common Cattle Tick. By J. L. Nunez, M. E. Munoz-Cobenas and H. L. Moltedo. Berlin: Springer-Verlag, 1985 (1982), pp. 204, 92 figs. Trans. H. Baillie, C. Michelsohn & C. Paris. ISBN 3-540-15146-X. Price DM 196.

A series of truncated Herpes simplex virion peptides studied by fast atom bombardment mass spectrometry under high and low energy collision induced dissociation conditions showed preferential fragmentation of the aspartyl‐proline amide bond, compared to other peptide bonds. Electrospray ionization investigation proved that this favoured fragmentation can not be attributed to only the known proline effect, as a change from Asp to Asn in the peptide yielded an Asn‐Pro bond which was found to be stable under the same ionization conditions. This mass spectrometric behaviour is in good agreement with the observation that DP bonds are sensitive to acidic conditions. © 1998 John Wiley & Sons, Ltd.

Chemical Methods for the Control of Arthropod Vectors and Pests of Public Health Importance. Geneva, World Health Organisation, 1984., pp. vi + 108 Price Sw Fr 14No Tillage Crop Production in the Tropics. Edited by I. O. Akobundu and A. E. Deutsch. Proceedings of WAWSS/IWSS Symposium, Monrovia, Liberia, August 1981. Corrallis: International Plant Protection Center, Oregon State University, Corrallis, OR 97331, USA, 1983. IPPC Document 46-B-83.Aviation in Crop Protection, Pollution and Insect Control. By H. R. Quantick, London: Collins Professional and Technical Books, Wm Collins & Sons, 1985, pp. 428 ISBN 0-00-383049-7. Price: £25.00.Plant Microbiology. By R. Campbell. Edward Arnold, 1985, pp. iv + 191. ISBN 0-7131-2892-5. Price £8.50.Guidelines for Drinking Water Quality. Volume 2. Health Criteria and Other Supporting Information.World Health Organisation Geneva, 1984. ISBN 92-4-154169-5Advances in Soil Science. Volume 1. Edited by B. A. Stewart, Berlin: Springer-Verlag, 1985., pp. ix + 300. ISBN 3-540-96027-9. Price D.M. 128 (hardback).The Biology of Gall Insects. Edited by T. N. Ananth-akrishnan. Edward Arnold, March 1985, pp. xii + 362, ISBN 0-7131-2906-9. Price £30.00.Field Problems of Tropical Rice. (Revised edition) International Rice Research Institute 1983 pp. 172, ISBN 971-104-080-8A Farmer's Primer on Growing Rice. By Benito S. Vergara., International Rice Research Institute, 1979, pp.221.Lever-Operated Knapsack Sprayers By H. H. Fisher and A. E. Deutsch. Corvallis: International Plant Protection Center, or IPPC Document 53-A-84, 1985. pp. 32 US Library of Congress No. 83-082988.Tropical Plant Diseases. By H. David Thurston. Minnesota, The American Phytopathological Society, 1984, pp. 208. ISBN 0-89054-063-2. Price $12Essential Malariology (2nd Edition). By Leonard J. Bruce-Chwatt. William Heinemann Medical Books Ltd., March 1985, ISBN 0-433-04521-3. Price £22.50 (ELBS edition £7.50).1984 Crop Protection Handbook—Grass and Clover Swards. Edited by R. D. Williams, British Crop Protection Council, 2a Kidderminster Road, Croydon CR0 2UE. pp. 105. ISBN 0-901436-70-4. £15 (UK), (£19, Overseas post free).Management and Evaluation of Intercropping Systems with Cassava. By D. E. Leihner, Centro Internacional de Agricultura Tropical, Colombia. December 1983, pp. 70. ISBN 84-89206-32-5. List price $10.00 (various price reductions for developing countries)Pesticide Residues in Food-1983. FAO Plant Production and Protection Paper 61. Rome, Food and Agriculture Organization of the United Nations, 1985. ISBN 92-5-102222-4.Pesticides, 6th edition. Strasbourg, Council of Europe, 1984, pp. 12. Price £5.45Insect Management for Food Storage and Processing. Edited by Fred J. Baur. St. Paul: American Association of Cereal Chemists, 1985, pp. xiv + 384. ISBN 0-913250-38-4. Price $65 (AACC Members $45).Training and Visit Extension. By Daniel Benor and Michael Baxter. Washington, D.C.: The World Bank, 1984, pp. xii + 202. ISBN 0-8213-0121-7 Price £17.50. ( + £1.15 p. & p.)Potatoes for the Developing World, a Collaborative Experience. Lima: International Potato Center, 1984, pp. x + 148.

The use of ‘shift reagents’ in the determination of n.m.r. spectra, and of reductive alkylation in combination with g.l.c.–mass spectrometry, facilitates assignment of the order of substituents in porphyrins, and the application of these new techniques to isocoproporphyrin is described.