Darwin-Hooker Letters : Letter from C. R. Darwin to J. D. Hooker 22 July [1879]
Darwin, Charles Robert
Darwin-Hooker Letters
<p style='text-align: justify;'>At work on <i>Movement in plants</i>.</p><p style='text-align: justify;'>Discusses John Ball’s, G. de Saporta’s, and his own theories of higher plant origin. Their rapid development remains an "abominable mystery".</p><p style='text-align: justify;'>Frank is working in Würzburg.</p>