Summary

JBJ explains his theory of atmospheric denudation of Irish river valleys, to be published [as "On the river valleys in the south of Ireland", Q. J. Geol. Soc. Lond. 18 (1862): 378–403], and suggests its application to the Weald. This slow process would make the Weald far older than CD’s 300 million years.

Thanks for Orchids.

Summary

Elaborates his denudation theory: marine denudation works horizontally, atmospheric works vertically.

Answers point in CD’s letter on Sydney Harbour, N. S. W.

Who is the "goose" who reviews CD’s books in the Athenæum [review of Orchids, 24 May 1862]?

Summary

The statement on p. 87 of Origin that birds break the eggs with their own beaks should be revised.