Darwin-Hooker Letters : Letter from Darwin, C. R., Darwin, Emma to Hooker, J. D. on 10 July 1865 : 1r
'Darwin, C. R.','Darwin, Emma'
Health very bad. All scientific work stopped for 2½ months. E. B. Tylor's Early history of mankind 1865 impresses him. Would like Hooker's opinion of last number of Spencer's Principles of Biology vol. 1 (1864), especially on umbellifers. Darwin not satisfied with Spencer's views on irregular flowers. ED reports on Darwin's health.