Returns corrected proof of his descriptions of S. American fossil shells [South America, appendix].

Has done Edmondston’s Galapagos plants.

Dispute between Edward Forbes and H. C. Watson.

Is slaving at South America – ¾ finished.

Has discovered geologists never read each other’s works – "the only object in writing a book is a proof of earnestness … Geology is at present very oral".

Has nearly finished South America.

Pleased to hear JDH has worked out identical and representative species of N. Temperate and Antarctic regions.

Geoffroy Saint Hilaire’s "loi du balancement" as applied to plants.

CD jaded by, but has nearly completed, South America.

Cannot come to Down to meet B. J. Sulivan as W. H. Harvey is calling.

Plant distribution and soil nature.

Forbes’s modification of Watson’s types of vegetation.

JDH will write comparison of representative plant species of the N. and S. Hemispheres.