Summary

CD confesses his error with respect to the cause of the scarcity of holly berries. It appears that several causes in combination have led to it. CD still believes rarity of bees played a part, though a subordinate one.

Summary

Thanks for the copy of Orchids.

Summary

Asks for key and letter to be sent to him at the New University Club in London.

Summary

Wants Francis [Rhodes] Darwin’s address; also asks if CD has heard "the great news".

Summary

CD forwards letter from F. J. Cohn [11093] that provides confirmation of observations by Francis Darwin on the contractile filaments protruded from the glands of Dipsacus.

Summary

Forwards letters.

Summary

Memorandum on Silchester. Report by IGJ of investigations carried out at Silchester with Frank and Horace [Darwin] on earthworm activity at the site of a Roman villa. Sections of vertical cuttings at Silchester, traced from the journal of the excavations of the Roman house, and notes on the same.

Summary

Asks permission to publish comments by FJC regarding paper by Francis Darwin [see 11073].

Summary

At Asa Gray’s request, writes what he knows about Pontederia cordata.

Summary

Answers CD’s query about payment made to him [for Descent and Forms of flowers] and explains the basis on which it was made. Because of CD’s wish to be paid before editions are sold off, profits must be estimated. If he were willing to accept annual statements of sales, payments based on them, and final accounting when all were sold, there would be no uncertainty. This is JM’s usual practice.

Summary

Will be interested in reading AdeC’s paper on Smilax. The transition from hermaphroditic to unisexual condition is a perplexing problem.

CD agrees that there is much justice in AdeC’s criticism of his use of the terms "object", "end", and "purpose" but thinks "those who believe that organs have been gradually modified by natural selection for a special purpose, may I think use the above terms correctly though no conscious being has intervened".

CD and Francis are hard at work on the function of "bloom" but CD doubts that the experiments will tell them much.

Does AdeC have a decided opinion on whether plants with glaucous leaves are more frequent in hot or dry than in cold or wet countries?

Francis has been getting "striking" results from feeding meat to Drosera.

Summary

Reports on his work. Relationships of shells found at Steinheim; attempts to elucidate the genesis of different forms.

Summary

Sends "worm journal" – observations of earthworm activity at Abinger.

Summary

Comments on AW’s book [Studien zur Descendenz-Theorie (1875–6)], especially on mimicry in caterpillars.

Mentions sets of drawings of British Lepidoptera in all stages. Would AW like to see them?

Summary

Doubts that glands of calyx of cleistogamic Malpighiaceae serve as protection.

Some species of Solanum bear long- and short-styled flowers on same plant.

Changing colours of some flowers may show insects the proper moment for fertilisation.

Doubts that the style of Pontederia cordata changes length.

Sexual difference in wings of some butterflies due to development in male of scales that emit odours to excite female.

Summary

C. E. Bessey’s case [see 10969] came too late, as the sheets had been printed, but CD thinks it should be carefully investigated as a possible case of incipient heterostyly.

Is trying to make out the function of "bloom", the waxy secretion on leaves and fruits.