Summary

Thanks LA and sends thanks to A. A. Gould for specimens. Describes principal findings of his research on cirripedes. Is obliged for information Joseph Leidy gave about cirripede eyes. Describes anatomical features and chief aspects of growth. Describes discovery of parasitic males and a species parasitic upon other cirripedes.

Summary

Describes his new microscope and its advantages for dissecting. Suggests RO might discuss topic [in his contribution to J. F. W. Herschel, ed., Manual of scientific enquiry (1849)].

Summary

Thanks JSH for his address [Address delivered in the Ipswich Museum on 9th March 1848]. Questions a sentence which implies that only the practical use of a scientific discovery makes it worth while. The instinct for truth justifies science without any practical results. Cites his work on cirripedes.

Summary

Confident of species theory as result of applying it to cirripede sexual systems.

CD’s opinion of E. Blyth. JDH should meet Blyth, inquire about domesticated varieties, study insular flora, solve coal-plant problem.

Summary

Criticises lecturing system in education and emphasis on classics. Has forgotten all his classical knowledge.

Asks JSH’s help in naming cirripedes, on which he is working. Believes he has made "some very curious points".

Expects a sixth child [Francis] in August.

Summary

Apologises for length of notes of advice for microscopic work.

Summary

CD apologises for his note to J. L. Stokes [see 940], which somehow found its way into GG’s hands.

Praises GG’s work on Australia.

Summary

Thanks CD for his Monday notes about Anne, which are much better than previous ones.

Summary

Asa Gray’s criticism of Buckle and his comments on large and small genera.

CD suspects glacial epoch immensely long. Rates of organic change too variable to make them a good measure of geological time.

Bees’ cells are a difficulty for theory.

Summary

Thanks him for specimens of Alcippe.

Comments on sketches by AH and on cirripede paper by Lovén.

Discusses Lithotrya and its burrowing habits.

Summary

Acknowledges cancelled bond and thanks CD for declining to accept interest. Suggests 4 Mar 1865 as date for payment of the bill CD holds.

Summary

CD makes progress with barnacles. Describes "supplemental" males in detail. In working out metamorphosis, their crustacean homologies followed automatically.

CD opposes appending first describer’s name to specific name.

Summary

Arranges a time for visiting HF.

Summary

Honoured and gratified by the dedication [to CD] of Hooker’s book [Himalayan journals].

News of Lyell from Madeira.

Summary

Physical description of Sikkim mountains.

Travelling through Kinchin snows.

Transported boulders.

Summary

Delighted JDH coming to Down. They will discuss Origin. JDH’s remarks that theory explains too much are excellent, yet CD cannot see his error.

Summary

JDH working on the New Zealand flora.

Jules Planchon excited about CD’s Linum experiments.

T. F. Jamieson’s paper on glaciers gives great pleasure.

Summary

CD’s doubts on biography of Henslow. Writing recollections of Cambridge days at JDH’s request.