Darwin-Hooker Letters : Letter from J. D. Hooker to C. R. Darwin [28 March 1863]
Hooker, Joseph Dalton
Darwin-Hooker Letters
<p style='text-align: justify;'>Evidence of tropical floras continuous since Tertiary cannot fit CD’s position on intermittent cold periods.</p><p style='text-align: justify;'>Agrees with CD on reversion and latency.</p>