Summary

Returns [Andrew] Murray’s paper;

especially values HD’s note that the same species of lice infect the different varieties of fowl, pigeon, and dog. Further queries about the relationship of the same species of pediculi to different domestic varieties.

Summary

Commends ARW’s papers on parrots

and on the theory of geographical distribution [see 4750].

Wild pigs in Aru Islands must have been introduced and later ran wild. Does ARW have an opinion on the subject?

Summary

Orders that one of CD’s Porto Santo rabbits be killed and sent to him.

Asks whether ADB has got young from mating these with females of other breeds.

Summary

Exchange of photographs.

Aru pigs present perplexing case, whether wild or domesticated.

Summary

Hugh Falconer’s death great loss to science.

His own health has been especially bad this last week.

Summary

Is glad MTM is going to experiment on Passiflora.

Is grieved to hear that John Scott has been inaccurate but cannot think he recorded, in his paper, experiments that he never made [see 4485].

Summary

"Read a letter from Mr Darwin expressing his regret that the state of his health would not permit of his writing an Introductory Chapter to the Translation of Gaertner’s work [Bastarderzeugung im Pflanzenreich (1849)]."

Summary

He has finished MEW’s work on hybrid willows [Die Bastardbefruchtung im Planzenreich (1865)] and sends his thanks. The extreme frequency of hybrid willows is new to CD, and he finds the explanation of their numbers in certain locations ingenious.

Comments on the criticism of Gärtner’s view of reversion

and the differences between MEW and Naudin.

CD now has doubts regarding his own view that hybrids are sterile from not being perfectly accommodated to their conditions of life.

Summary

Requests all parts of Transactions due him.

Summary

Inquires about body of Porto Santo rabbit which has not arrived.

Summary

Falconer’s death haunts him. Personal annihilation not so horrifying to him as sun cooling some day and human race ending.

His health has been wretched.

Masters has written his agreement with CD’s "Climbing plants".

Summary

CD sends thanks for feather of the Gallus.

The rabbit arrived safely, but unfortunately the entrails had been removed; if ADB catches the other one, CD would like it sent unmutilated.

Summary

Hildebrand has sent copy of his paper on Pulmonaria in Botanische Zeitung.

How much should CD contribute to Falconer’s bust?

Oswald Heer on alpine and Arctic floras.

A. R. Wallace on geographical distribution in Malay Archipelago.

Lyell’s new edition of Elements. Wishes someone would do a book like it on botany.

Summary

Belated thanks to CL for copy of Elements. Praises CL’s work. Notes especially Atlantic continents, the Weald, the Purbeck beds, glacial action, and the formation of lake-basins.

Also mentions account of Heer’s work

and CD’s disagreement with J. D. Forbes.

Suggests that CL have Murray print a two-volume edition [of the Elements].

Summary

Wants his fowl MS.

Will shortly return WBT’s skulls.

Summary

Asks for return of page about pigeon crossing.

Summary

Asks for WBT’s help in arranging for woodcuts to illustrate pigeon chapters of Variation.

Summary

Is pleased to hear of Dr Heine’s interest in Origin. Questions whether Dr Heine’s law of inheritance can be demonstrated.

Summary

Thanks for Thomson’s and JDH’s views on Scott’s paper. Will send it back with advice and explanations.

Summary

Has heard from Mr Pennell, and written to say too ill to see him. Would like to hear about skin between toes of otter hounds in comparison with other hounds.