Summary

Smallpox in the village. Death of Joseph Parslow’s son.

Summary

CD relieved by JDH’s positive response to his MS.

CD continues observations on means of transport.

JDH’s Raoul Island paper [J. Linn. Soc. Lond. (Bot.) 22 (1857): 133–41], showing continuity of vegetation with New Zealand, best evidence yet of continental extension.

Summary

Arranges an appointment.

Summary

Thanks AG for the first part of his "Statistics [of the flora of the northern U. S.", Am. J. Sci. 2d ser. 22 (1856): 204–32; 2d ser. 23 (1857): 62–84, 369–403]

and for information on social and varying plants.

Would like to know number of genera of introduced plants in U. S.

Is surprised at some affinities of northern U. S. flora and asks for any climatic explanations.

Asks what proportion of genera common to U. S. and Europe are mundane.

Is glad AG will work out the northern ranges of the European species and the ranges of species with regard to size of genera.

Summary

Discusses the flora of Porto Santo in relation to that of Madeira. While these islands have some 20 endemic species in common, there are 7 or 8 species endemic to Porto Santo alone, and 25 common to Porto Santo and Europe that are not found on Madeira. Believes the great difference in soil and climate is enough to explain this: plants common on one island cannot be made to grow on the other. Believes J. D. Hooker has underestimated the number of species endemic to Madeira. There are some remarkable endemic species of common plants in the Dezertas.

The eel is the only freshwater fish on Porto Santo and Madeira.

Summary

Would like to compare the length of the wings of non-migratory and migratory swallows.

Wonders if EWVH could show him skins of Columba livia.

Summary

Writes of arrangements for the end of the school-term.

Condition of Emma and the new baby [C. W. Darwin].

Summary

Outlines the ranges of northern U. S. species common to Europe. Hopes to investigate the resemblances between the floras of the north-eastern U. S. and western Europe. Discusses routes by which alpine plants appear to have reached U. S.

Summary

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

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

Summary

Variability of naturalised plants.

Distribution of Arctic/alpine plant species.

Limits to the northern range of plants.

Summary

Opposition to EB within the Asiatic Society.

Possibility of establishment of a zoological garden at Calcutta.

Has seen Gallus varius alive for the first time.

Will procure domestic pigeons for CD; could CD pay for them by returning hardy creatures, such as macaws and marmosets, which EB can sell for a high price in India?

Does not recall his authority for genealogy of the asses of Oman. If a genuine wild ass exists EB believes it will be in south Arabia.

Infertility of Irish and Devon red deer.

Details of an unusual species of wild dog.

Fertility of canine hybrids. General tendency toward hybrid sterility.

Has skins of hybrid Coracias and the parent species.

Wide-ranging species; skua found in Europe and Australia, but not in the tropics.

Summary

Continued debate on formation of species as a result of retreat from glaciers.

JDH suggests internal powers of species modification, which he knows CD abhors.

Summary

Thanks HTS for Entomologist’s Weekly Intelligencer [no. 2, 12 Apr 1856]. Agrees with his remarks [in "Why did Mr Westwood get the Royal Medal?"], but explains that a change in rules for awarding the Royal Medal has been made. Earlier it had to be given for publications in Philosophical Transactions of the Royal Society, which explains small number of entomologist recipients.

Summary

Discusses chapter [6] on cleavage and foliation in South America. Notes especially cleavage where two series cross and cleavage as basis of foliation in metamorphosed rock. Notes foliation in rocks that have been liquefied by heat. Mentions case described in his "Geology of the Falkland Islands" [Collected papers 1: 203–12]. Discusses relationship of cleavage to beds. Speculations on association between grauwacke and clay-slates.

Summary

Is grateful for SB’s note and assistance. Will call upon him in London in a fortnight.

Summary

His thanks for the extracts sent by SB.

Summary

CD and Hooker suggest Sir John Richardson for Royal Medal. Other suggestions are George Bentham, Joseph Prestwich, Albany Hancock.

Summary

Speculates about cause of inclination in unusual columns of lava. Suggests CL check with William Hopkins about sliding movements in viscid matter.

Comments on CL’s expedition to Madeira.

Summary

Comments on SPW’s book [Manual of Mollusca (1851–6)].

Mentions questions he has for SPW [see 1890].

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.