Darwin-Hooker Letters : Letter from C. R. Darwin to J. D. Hooker 3 and 4 August [1866]
Darwin, Charles Robert
Darwin-Hooker Letters
<p style='text-align: justify;'>Answers JDH’s questions on connection of SE. England and continent,</p><p style='text-align: justify;'>on the effect of breaking the Isthmus of Panama,</p><p style='text-align: justify;'>and on Madeira flora as remnant of Tertiary flora.</p><p style='text-align: justify;'>Cautionary remarks for JDH on his "Insular floras" speech, designed to strengthen case of "occasional migration" theory.</p>