Thanks for her letter of March, which gave him his first explanation of the interest in the [Megatherium] head he had sent.

Wants E. A. Darwin to tell William Clift not to remove numbers or markers on any specimens. The British Museum has first claim on any of his specimens; CD cannot at present say where any should go.

Gives a map of part of Chile between Santiago and San Fernando. Suggests places and people that CD might profitably visit [en route].

Recounts his trip [from Valparaiso] to Santiago. His meeting with Claude Gay, Thomas Sutcliffe, and others. Geology of tour uninteresting.