Darwin-Hooker Letters : Letter from J. D. Hooker to C. R. Darwin [before 6 May 1858]
Hooker, Joseph Dalton
Darwin-Hooker Letters
<p style='text-align: justify;'>Reports that N. J. Andersson finds every European willow bar one is also American.</p><p style='text-align: justify;'>Has heard from David Livingstone and reports on his progress.</p>