Did not wish to imply that some leaves are insensitive to light, only that he could not measure their sensitivity. Contraction of roots seems common.

Has not been able to complete Bohemian edition of Origin because of trip to Africa.

Is collecting zoological evidence for CD’s theory.

Is applying for the Chair of Botany at Edinburgh and asks CD for a testimonial.

Sends results of the first year’s experiments with the Russian wheat varieties sent by CD [see 11483].

A founding member of the Royal Agricultural Society sends information on the specificity of sheep varieties to soil types.

Sleep movements in Oxalis acetosella.

Sends thanks to the Masters for congratulations on his birthday, saying "the approbation & sympathy of one’s fellow-workers in the acquisition of knowledge is the highest possible reward which any man ought to desire".