Summary

Wild cat gestation is twelve days longer than domestic cat, a fact not mentioned in Variation.

Summary

Wonders whether CD has any idea how the cuckoo manages to match its eggs to those of its host; believes it possible that the diet of the nestling cuckoo, which varies with its host, may affect its behaviour and the colour of its eggs.

Summary

Sends copy of Land and Water, a journal he now edits. Has quit the Field. Asks CD to patronise his columns with queries, as other zoologists do.

Summary

Bees’ cells; is the hexagonal shape deliberate or merely the result of lateral pressure on cylinders?

Summary

He has gone through the whole embryology of the Crustacea and has arrived at a pretty well-established genealogy of the whole class; has even tried to write a history of the whole tribe. Finds he cannot adopt the old separation of Orders in the Class; the limits between them are indistinct.

Would like to study embryology of Limulus. Asks CD’s help in obtaining a female specimen.

Outlines his proposal to establish a marine zoological station.

Summary

Thanks for ESM’s address ["What American zoologists have done for evolution", Proc. Am. Assoc. Adv. Sci. 25 (1876)].

J. A. Allen’s work is important as apparently showing change through direct action of [external] conditions.

CD has given up trying to understand E. D. Cope and Alpheus Hyatt on acceleration and retardation.

Summary

Requests a volume of Zoologist with an article dated Oct 1849.

Summary

E. R. Lankester is in danger of being black-balled for admission to the Linnean Society; Thiselton-Dyer is in the midst of the fight.

Summary

Thanks CD for notes concerning the development of his ideas about the origin of species. Says August Schleicher and Carl Gegenbaur also interested.

Names new supporters of CD’s theory, including Max Schultze, Rudolf Leuckart, and Alexander Braun. Zoologists have been more interested than botanists.

He is writing a general work on the relationships among animals [Generelle Morphologie der Organismen (1866)].

Comments on Fritz Müller’s Für Darwin [1864].

Gegenbaur is revising his Grundzüge der vergleichenden Anatomie [2d ed. (1870)] to accord with evolution.

Thanks CD for copy of book on balanids [Living Cirripedia, vol. 2].

Summary

Cannot answer AN’s questions about Origin; it would take weeks to find the references. Assures AN he stated nothing without an authority he thought good.

Feels sure missel thrushes have increased in number since his youth. Starlings have also increased astonishingly in Kent. "How inexplicable most of these cases are".

In a P.S. remembers his source for statement about increase of missel thrushes in Origin.

Summary

Defines the term "typical species" and discusses its use among zoologists. Cites example of type of Carnivora. Comments on general law of development of parts in animals. Cites teeth of Carnivora.

Summary

Thanks GM for his fair review [of Origin, Zoologist 19 (1861): 7577–611].

Feels it is a pity to mingle science and religion;

explains why he did not deal with the case of man.

Summary

[Draft of letter for Francis Darwin to write to SF.] CD declines to express an opinion on SF’s query.

Summary

Thanks for paper and references on variations [missing].

Regrets HWB’s trouble about artists, etc., saying such trouble is a law of nature.

Asks whether HWB has heard of starving Indians who are forced to cook in different ways, and eat new things.

Summary

Sends the 1872 Report of the U. S. Geological Survey of the Territories, for which he was zoologist.

Most American naturalists support CD. His study of ornithology convinced him.

Lepus bairdii has a distribution limited to Yellowstone Lake.

No doubt CD knows of O. C. Marsh’s horse fossils.

Summary

Sends GB a selection of reviews of the Origin from his collection of about 90, with his opinion of some of them.

Summary

His gratitude for CD’s gift. An account of his difficulties with the Zoological Station and his health.

F. M. Balfour has told him that CD would like to see the question of complemental males in cirripedes studied again. AD would like to enter the field and to study the whole morphological development of cirripedes.

Describes the interest in embryological work in Russia and Germany.

Summary

Asks for a testimonial for Edward Newman.

Discusses the Origin, considers natural selection works well when applied to the evolution of nations and groups of men; on the other hand feels the classification of mineral elements is a damaging analogy as it parallels organic classification but could not be derived by any evolutionary means.

Summary

Thanks CD for his kind offer [of translation rights for Descent].

Feels it a duty to make CD’s "way of looking to fields [recte facts] under the guidance of ideas" known to his countrymen, especially since zoologists and physiologists seem to think science is nothing but the accumulation of facts and have almost forgotten to reason about them.

Explains that, contrary to Carl Vogt’s report to CD, he continues as Professor of Comparative Anatomy at Leipzig, but he has failed to get the place of the late Professor of Zoology, as he had hoped.

Summary

The house at Barmouth.

His poor health.

Bentham’s interesting Linnean Society Address ["On geographical biology", Proc. Linn. Soc. Lond. (1869): lxv–c].

CD particularly wishes to know how botanists agreed with zoologists on distribution.

Still thinks isolation more important in preserving old forms than Bentham is inclined to believe.