Sends anecdotes relating to Expression;

criticises CD’s use of Hensleigh Wedgwood’s views on language.

Complains about J. J. Moulinié’s translation of Descent.

Sends CD description of preparation of extract of belladonna.

If decapod does not pass through zoea stage, is this acceleration? If hypothetical adult retained zoea characters, would this be retardation? Believes obliteration of growth stages frequently due to natural selection. Most interesting points in AH’s letter deal with senile characters. CD attributes them to laws of growth not selection. Explains degraded characters as result of readaptation to simpler conditions. Believes no innate tendency to progressive development exists.

Hopes AH visits F. Hilgendorf’s famous deposit [at Steinheim]. A. Weismann [Einfluss der Isolierung (1872)] makes good use of Hilgendorf’s observations.

Thanks for copies of CD’s works.

No summary available.

Thanks for information about the Atropia.