Summary

Preference of stallions for hybrid mares.

Summary

Quotes passage from [Frédéric?] Gerard on distribution of certain Lepidoptera.

Summary

Whether or not there should be movement of particles according to Tyndall’s theory of glacial action ["Observations on glaciers", Not. Proc. R. Inst. G. B. 2: 54–8, 441–3].

CD subscribes to H. C. Sorby’s view of gneiss [Edinburgh New Philos. J. 55 (1853): 137–50].

Seed-salting.

Pigeons.

Significant differences in skeletons of domesticated rabbits.

Summary

Responds to CD’s query about the blind fauna of Mammoth Cave.

Gives information from L. Agassiz. Distribution of Crustacea, especially along southern coastlines.

Summary

On JAHdeB’s discovery of Cretaceous Chthamalus. Cites his own acceptance of negative evidence about Chthamali in Fossil Lepadidae.

Comments on JAHdeB’s cirripede drawings.

Summary

Reports on the naturalised animal life of Ascension.

Summary

Requests observations on pigeons.

Knew LE’s son [Thomas] and deplores his fate [accidental death in 1846].

Summary

CD concerned with rabbits and ducks because evidence of their single origin is "better … than in most cases".

Death of William Yarrell.

Summary

C. T. Beke has communicated to the Mauritius Natural History Society a letter he received from CD. VdeR attempts to answer questions on transport of seeds by the ocean.

Summary

States his requirements with regard to pigeons and his interest in ducks and rabbits. Inquires about poultry seen at Leith Hill.

Summary

CD is working hard on variations.

Asks if PHG’s bald-pate pigeon [described in A naturalist’s sojourn in Jamaica (1851)] is a true rock-pigeon.

Can he obtain a specimen of the rabbits that have run wild, and a wild canary, and the body of any domestic or fancy pigeon which has been in the West Indies for some generations?

Summary

Plants that are social in the U. S. but are not so in the Old World.

Distribution of U. S. species common to Europe.

Gives Theodor Engelmann’s opinion on the relative variability of indigenous and introduced plants and notes the effects of man’s settlement on the numbers and distribution of indigenous plants.

Summary

Sends review by Quatrefages [de Bréau] of Owen’s Parthenogenesis [1849].

J. D. Dana’s congratulations on JL’s marriage.

Summary

Thanks PHG for information about the bald-pate pigeon.

Will write to Richard Hill.

Can PHG remember any facts relevant to transport of animals and plants to distant islands?

Summary

Will send MS on one point of geographical distribution. It is "of infinite importance" that JDH see it, for CD has never felt such difficulty in deciding what to do.

Wants capsules of aquatic plants, to float in sea-water.

Summary

Thanks JDD for replies to queries [in 1925]; would like to know whether teeth of cave rat are of New or Old World type.

Wishes Louis Agassiz would publish his theory of parallels of geological and embryological development. "I wish to believe but have not seen nearly enough as yet to make me a disciple."

Is working hard on variations and origin of species, but fears it will be a couple of years before he publishes.

Describes his recent work on rabbits and pigeons.

The dispersal of land Mollusca is a most difficult problem.

Confesses he is sceptical of immutability of species; discusses difficulty of proving it.

Summary

Specifies pigeons in which he is interested. Has become almost more interested in rabbits than anything else.

Summary

George is not so low at school as CD anticipated. He keeps at the top of his class, thanks to GVR’s labours.