Summary

Interested to hear about the peas.

Summary

Thinks CD’s case of twins with crooked fingers may be one from his twin study.

Summary

Agrees to write to William Ogle [about twins with crooked fingers].

Describes growth of sweetpeas for experiment.

Summary

Sends a lecture CD wished to see

and corrects himself about the twins.

Summary

Thanks FG for issues of Revue [Scientifique vol. 7, containing lectures by Claude Bernard].

Ogle says twins [with crooked fingers] are his sisters.

Recommends book by M. A. Puvis [De la dégénération des variétés de végétaux (1837)].

Summary

Has heard that FG will write on inheritance. Huxley does not believe in E. G. Balbiani’s views on subject.

Summary

Outlines a memoir he will give at the Anthropological Society in which he differs theoretically with Pangenesis.

Summary

In London yesterday for Vivisection Commission.

Is revising his chapter on Pangenesis [in Variation, 2d ed.] to allow that gemmules probably multiply in the reproductive organs.

Notes examples of inheritance of acquired characteristics cited by Brown-Séquard.

Doubts that double parentage is necessary for complex organisations.

Summary

Sends a proof of his "Theory of heredity" from the Contemporary Review [27 (1875): 80–95; revised in J. Anthropol. Inst. 5 (1876): 329–48]. Welcomes CD’s help and criticism.

Summary

Comments on FG’s paper ["A theory of heredity"]. Finds essay difficult to understand. Objects that FG’s theory conflicts with phenomenon of use and disuse. Conflicts also with rarity of bud-variations in nature.

Says he has ordered FG’s article ["The history of twins", Fraser’s Mag. 92 (1875): 566–76; revised in J. Anthropol. Inst. 5 (1876): 391–406].

Summary

Responds to suggestions and criticisms CD made to "theory of heredity" [see 10245].

Summary

Comments on FG’s paper ["The history of twins"].

CD is "in a passion with the Spectator who always muddles".

Summary

Thanks for the peas which arrived in "beautiful order".

Summary

Mentions revisions [in Variation, 2d ed.].

Argues with FG’s theory of heredity, defending Pangenesis: "I cannot doubt that every unit of the hybrid is hybridised and sends forth hybridised gemmules."

Summary

Outlines in simple form the statistical distribution of inherited characteristics in a theory of "organic units".

Summary

Gives further explanations of his theory of stirps and his objections to Pangenesis, in answer to a question of CD’s.

Summary

Is sending some seeds of sweetpeas, which George [Darwin] said CD would plant for him.