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Mendel's was a data-led approach, in keeping with biometry, and so Weldon began thinking about the statistical tools that would deliver the trait distributions Mendel reported. Weldon died before he could achieve a statistical treatment of Mendel, and Pearson moved on to other projects. Weldon fully committed to a statistical approach to evolution, co-opting Pearson's methods to analyze crab dimension and mortality data. [Extracted from the article]

Reviews the book 'Arithmetique politique. Textes rares ou inédits,' by Marquis De Condorcet.

Information on a symposium regarding the views of philosopher Rudolf Carnap on the axiom of infinity is presented. The author mentions that Carnap agrees with the axioms of Peano arithmetic in agreement to their standard interpretation in type theory. He also concluded that Carnap thought of infinite ways that objects could be arranged in space and time.

Reviews the book "La Géométrie spontanéc de l'enfant," by J. Piaget, B. Inhelder and A. Szeminska.

Reviews the book "Arithmetic and Curriculum Organization," vol. 3, by Vincent J. Glennon.

Reviews the book 'Arithme-Tickle: An Even Number of Odd Riddle-Rhymes,' by J. Patrick Lewis and illustrated by Frank Remkiewicz.

The article reviews the book "Reason's Nearest Kin: Philosophies of Arithmetic From Kant to Carnap," by Michael Potter.

Reviews the book 'Reason's Nearest Kin,' by Michael Potter.

The article reviews the book "Subsystems of Second Order Arithmetic," by Steven G. Simpson.

A review of the book "Le Liber mahameleth: Edition critique et commentaires," part of the Boethius: Texte und Abhandlungen zur Geschichte der Mathematik und der Naturwissenschaften series, edited by Anne-Marie Vlasschaert is presented.

Reviews the book "The Triumph of Numbers: How They Shaped Modern Life," by I. Bernard Cohen.

The article reviews the book "Fearless Symmetry: Exposing the Hidden Patterns of Numbers," by Avner Ash and Robert Gross.