Summary

Glacial action in the Andes.

Origin of Chilean sheep.

Varieties of S. American horses.

Summary

Blushing in South American Indians.

Hairlessness of Aymaras and Quechuas. [See Descent 2: 322–3.]

Summary

DF’s opinion of Gustav Jenzsch’s book [Mikroskopische Flora und Fauna (1868)]. Encloses extract of a letter from Ferdinand Zirkel also mentioning Jenzsch’s work.

Summary

Has completed a memoir on the Aymara Indians of Bolivia [J. Ethnol. Soc. n.s. 2 (1870): 193–305] and is going to lecture on them.

Believes he has data relevant to CD’s work on man.

Summary

Would much like CD to contribute a note for insertion after his paper on Aymara Indians.

Summary

Thanks for copy of Descent.

Summary

Effect of turf covering on the disintegration of rocks. Weathering of rock; relative importance of different agents with different rocks.

Summary

Sends information on composition of chalk at Shoreham and Folkestone.