Thanks AB for his letter, his essay on climates ["Theorie der wechselnden kontinentalen und insularen Klimate", Bot. Jahrb. 2 (1882): 1–50, 177–84], and for his photograph. Sends his own.

Communicates two cases of inheritance reported by J. P. Bishop [in 13137]. The work of E. Brown-Séquard has demonstrated that effects of injuries can be inherited ["Hereditary transmission of an epileptiform affection accidentally produced", Proc. R. Soc. Lond. 10 (1860): 297–8]. E. Dupuy has sent CD a still more remarkable case.