Summary

Comments on CL’s Principles of geology, 11th ed.

Discusses natural selection in man.

Summary

Comments on migration as a factor in evolution. Suggests pamphlet by August Weismann on the subject [Über den Einfluss der Isolierung (1872)].

Summary

Comments on enclosed discussion of S. American geology by Agassiz. Mentions elevation of Patagonia and glaciation.

Summary

Sends, for signature, a statement approving change in rules of the Leopoldino Academy [Dresden] to be forwarded to CD to sign.

Summary

Has been looking for something about crop rotation in Origin and Variation.

Summary

Thanks him for interesting letter from a Mr Wood on heredity in fruit-trees.

Summary

Thanks for proofs of the Supplement to Crag Mollusca. Sends crab apples.

Summary

Gives information on recent editions of Lyell’s works.

Summary

Thanks her for marked proof-sheets.

Discusses climate in earlier geological periods.

Summary

Is much vexed about Drosera.

Land-level changes and volcanic activity.

Summary

Discussion of his possible assistance on editorial work for revised edition of Descent.

Summary

Fears Variation [2d ed.] will not be ready for Murray’s annual sale unless printer sends proof more quickly. Arrangements with Italian publishers.

Summary

Discusses apple specimens received from CL; reversion to crab state. Cites passage on subject in Variation.

Comments on letter from Mr Wood on inheritance in fruit-trees.

Would like to cross flowers of "Hawthornden" with many distinct varieties.

Summary

On photographic illustrations [for Expression].

Estimates 7s 6d price for a cheap edition of Origin [6th].

Summary

Canestrini still owes £10 from 1869 for electros of 1st edition [of Variation].

RC has urged Clowes on with printing of Variation [2d ed.],

but with Climbing plants [2d ed.] ready, it need not be done before the annual sale.

Summary

Notes recent confirmation of CD’s views on subsidence in [island of] St Jago.

Describes Carboniferous strata discovered on Island of Mull by J. W. Judd. Contained evidence of Miocene sinking of volcanoes.

Summary

Comments on the reaction of geologists to GHD’s work on elevation of continents.

Summary

Comments on Huxley’s address ["Geological reform", Q. J. Geol. Soc. Lond. 25 (1869): xxxviii–liii].

Physicists have ignored variation in sea-level in calculating effects.

Doubts if sun only source of heat.

Notes average depth of sea is 15 times height of land.

Criticises CD’s concept of permanent continents.

Sedimentary strata of Alleghenies must have derived from continent located where Atlantic is. Thinks enormous amount of denudation, submergence, and elevation may have accompanied relatively insignificant organic changes.

Summary

Charmed by Huxley’s letter of appreciation [8873].

Lady Lyell’s sudden death.