Thanks AG for Considérations générales [sur les animaux fossiles] de Pikermi [1866]. The observations on the various intermediate fossil forms seem most valuable.

AG does not fully understand what CD means by "the struggle for existence, or concurrence vitale".

Is much obliged for AG’s two memoirs ["Mémoire sur le reptile découvert par M. Frossard", Nouv. Arch. Mus. Hist. Nat. 3 (1867): 21–40; Bull. Soc. Géol. France 2d ser. 24 (1867): 397–400].

All "inosculating forms" are very interesting to CD.

Agrees with AG on the importance of attempts to affiliate extinct and existing species.

Will send French edition of Variation when published.

Thanks AG for his essay on geology and Athenian history [see 5784].

Comments on French rejection of evolution. "How strange that the country of Buffon, Geoffroy and especially Lamarck should now cling to species as immutable creations."

Variation will soon appear in French.

Thanks AG for Animaux fossiles et géologie de l’Attique [1862–7]. Refers to Lyell’s quotation from AG as "one of the most striking I have ever read on the affiliation of Species".

Thanks for gift of first part of AG’s magnificent work [Animaux fossiles du mont Léberon (1873)].

Thanks AG for his kindness in sending his valuable work [Les enchaînements du monde animal vol. 1 (1878)].