Their views on transformism differ a great deal, as CD says, but perhaps not as much as CD thinks. Sending his [Physiologie comparée: métamorphoses de l’homme et des animaux (1862)].

Charles Martins of Montpellier will collect the varieties of silkworm for CD.

QdeB is battling with the polygenists in the Société d’Anthropologie.

Continues to support, in debates at the Société d’Anthropologie, the view that variability of animals and anatomical modifications are produced by environment. Wishes to use CD’s niata cattle example from Journal of researches [2d ed., pp. 145–6].

Spoke on Moulin-Quignon Jaw before Académie des Sciences.

Thanks CD for photograph [of Niata skull].

Controversy on species fixity [at Société d’Anthropologie].

Sends photographs of Mouin-Quignon Jaw.

Sends his book [Histoire naturelle des annelés marins et d’eau douce, 2 vols. (1865)].

Proportions of sexes of the silkworm are about equal, but knows of no statistics.

Cannot share his view of origin of species.

Comments on their differences regarding evolution. Acknowledges that CD alone has produced an evolutionary theory that is scientific and all-embracing. Appreciates grandeur of CD’s work.