Darwin-Hooker Letters : Letter from C. R. Darwin to J. D. Hooker 13 April [1855]
Darwin, Charles Robert
Darwin-Hooker Letters
<p style='text-align: justify;'>Pea self-fertilisation: has forty-five varieties growing side by side.</p><p style='text-align: justify;'>Describes seed-salting experiments: e.g., immersion in tank filled with snow. Reports some successful germinations.</p><p style='text-align: justify;'>Made list of naturalised plants from Asa Gray’s <i>Manual</i> [<i>of Botany</i>] to calculate the proportions of the great families.</p>