Darwin-Hooker Letters : Letter from Darwin, C. R. to Hooker, J. D. on 16 Jan 1862 : 1r
'Darwin, C. R.'
Entire family down with influenza. Has done nothing for three weeks. Asks for Haast reference on New Zealand glacial deposits. Darwin's view of the North since Trent case. Can no longer write with sympathy to Asa Gray. Encourages Hooker about his son, Willy. Problem of relation of colour to external conditions. Hopes Hooker will undertake the investigation.