Darwin-Hooker Letters : Letter from J. D. Hooker to C. R. Darwin 21 February 1866
Hooker, Joseph Dalton
Darwin-Hooker Letters
<p style='text-align: justify;'>Had Busks and Lyells to dinner.</p><p style='text-align: justify;'>Examines and criticises evidence for CD’s hypothesis that the glacial period was not one of universal cold. Physicists deny its possibility.</p>