Argues for great age of earth before the Cambrian period. Opposes measuring age from secular cooling. Opposes Sir William Thomson. Lyell’s error on secular cooling.

Thanks for Moseley citation ["On the mechanical possibility of the descent of glaciers", Proc. R. Soc. Lond. 17 (1869): 202–8].

In Edinburgh he feels out of touch with latest developments.

Consoling to CD that JC gives "a little more age to the world".

Cites article by Henry Moseley ["On the mechanical possibility of the descent of glaciers", Proc. R. Soc. Lond. 17 (1869): 202–8].

Mentions article by A. R. Clarke on shape of the globe.

Thanks for abstract of Moseley’s paper on motion of glaciers [see 6599]. Reading it convinced him that Tyndall’s received view is wrong. Has formed a new view, which he has sent to Philosophical Magazine [4th ser. 37 (1869): 201–6].

Thanks JC for his proofs of article on the movement of glaciers.

Thanks for presentation copy of Origin [5th ed.].

Clarifies his point on north and south glacial periods. Supports CD’s view that temperate plants will move up mountains during the alternation.

Introduces E. L. Youmans to correspondent. Youmans is seeking small monographs by the most competent English authors [for his International Scientific Series].

Refused to write a treatise on geological time.

His paper on W. B. Carpenter’s theory of ocean currents is appearing soon.

Comments on JC’s paper ["On the tidal retardation argument for the age of the earth", Rep. BAAS (1876): 88–9].

Thanks for presentation copy of Earthworms.