Summary

Effect of turf covering on the disintegration of rocks. Weathering of rock; relative importance of different agents with different rocks.

Summary

Thanks for copy of Descent.

Summary

Sends information on composition of chalk at Shoreham and Folkestone.

Summary

Would much like CD to contribute a note for insertion after his paper on Aymara Indians.

Summary

Has completed a memoir on the Aymara Indians of Bolivia [J. Ethnol. Soc. n.s. 2 (1870): 193–305] and is going to lecture on them.

Believes he has data relevant to CD’s work on man.

Summary

DF’s opinion of Gustav Jenzsch’s book [Mikroskopische Flora und Fauna (1868)]. Encloses extract of a letter from Ferdinand Zirkel also mentioning Jenzsch’s work.

Summary

Glacial action in the Andes.

Origin of Chilean sheep.

Varieties of S. American horses.

Summary

Blushing in South American Indians.

Hairlessness of Aymaras and Quechuas. [See Descent 2: 322–3.]

Summary

Sends dirt residue of chalk samples for David Forbes to examine.

Summary

Has inquired about magnetic storms. Any effect that could be produced by the sun’s energy in retarding the cooling of the earth would be utterly insignificant.

Tells of his visit to Eton.

Is uncertain about next steps to take for a legal career.

Summary

CL has calculated that elevation and subsidence of certain formations in Sweden and Norway take place at the rate of 2 1/2 feet per century. He now proposes to estimate the age of a bed by including a conjecture that pauses occur in the oscillations in the ratio of 4 periods of stasis to one of movement. Applying this formula to Scotland, the last subsidence and re-elevation would be 590,000 years and the age of the beds with human implements would be 20,000 years.

Summary

Thanks CD for copy of Descent. Is considering running for School Board.

Summary

Describes his tour of the Netherlands. Reports on some of the specimens he saw on his trip.

Discusses the coloration of hair in aged monkey

and sexual differences in bird species.

Summary

W. C. Wells’s theory relating black skin-colour and immunity to malaria may be true. Has seen Negroes come down with fever, but these were generally light in colour.

Summary

JDH recommends Augustin de Saint-Hilaire’s Leçons de botanique [1841]. Relates opinions of European botanists on migration and plant distribution.

Summary

Sending sheets of his forthcoming work on Africa [Martyrdom of man (1872)] with views that differ from CD’s on music and sexual selection.

The Pall Mall Gazette will review the new [6th] edition of the Origin, together with Mivart’s Genesis of species [1871].

Summary

Mimosa too far gone to send now.

CD’s marjoram is the common [Origanum] vulgare, not the pot herb.

On the water injury, Thiselton-Dyer and he may have used too fine a spray, but plant is insensitive.

Horribly angry at P. G. Tait’s letter in Nature [8 (1873): 381–2].

Tyndall writes that he is strong – the next number of Nature will prove it.

G. Henslow is much better.

JDH leaves for Bradford [BAAS meeting] tomorrow.

Rejoices at CD’s success with Drosera; longs to be at Nepenthes.

Summary

Concern for Lady Lyell;

will clear away work and set off for holiday in June.

Sends Critiques and addresses.

A life of J. D. Forbes [by J. C. Shairp, P. J. Tait, and A. A. Reilly (1873)] suggests that THH and Tyndall conspired to keep JDF from getting the Copley Medal. THH feels obliged to correct this.

Summary

Thanks for C. E. Norton’s address.

Tyndall’s answer [Nature 8 (1873): 399] has surprised and disappointed him;

great trouble in announcing Tyndall’s election as President Elect [of BAAS] yesterday. Tyndall may throw up the Presidency. Spottiswoode and JDH have concocted a letter telling him the facts.

A very poor dull meeting. Comments on papers by W. C. Williamson, Clerk Maxwell, David Ferrier, Burdon Sanderson [Rep. BAAS 43: lxx–xci, 23–32,126–7, 131–3].

Has heard Huxley is back quite well.

Summary

The Negro’s idea of beauty is the same as white man’s.

Believes the Jollops select for blackness.

Native immunity from coast fever is not complete.

Has found stone instruments.