[214]. Ch. Darwin, ‘On the fertilization of Orchids by Insects.’ London, 1877.

[215]. Compare Hermann Müller, ‘Die Befruchtung der Blumen durch Insekten und die gegenseitigen Anpassungen beider.’ Leipzig, 1873. See also many articles by the same author in ‘Kosmos,’ and other periodicals. These later articles are included in the English translation by D’Arcy W. Thompson.

[216]. ‘Lectures on the Physiology of Plants,’ translated by H. Marshall Ward, Oxford, 1887, p. 47.

[217]. Appendix to page [267].

[218]. Brown-Séquard, ‘Researches on epilepsy; its artificial production in animals and its etiology, nature, and treatment.’ Boston, 1857. Also various papers by the same author in ‘Journal de physiologie de l’homme,’ Tome I and III, 1858, 1860, and in ‘Archives de physiologie normale et pathologique,’ Tome I-IV, 1868-1872.

[219]. ‘Oesterreichische medicinische Jahrbücher.’ Jahrgang, 1875, p. 179.

[220]. A direct transmission of the germs of disease through the reproductive cells has lately been rendered probable in the case of tuberculosis, for the bacilli have been found in tubercles in the lungs of an eight-months’ fœtal calf, the mother being affected at the time with acute tuberculosis. However it is not impossible that infection may have arisen through the placenta. See ‘Fortschritte der Medicin,’ Bd. III, 1885, p. 198.

[221]. Compare Unvericht, ‘Experimentelle und klinische Untersuchungen über die Epilepsie.’ Berlin, 1883. With regard to the question of hereditary transmission, the part of the brain in which the epileptic centre is placed is of no importance.

[222]. Compare Ziemssen’s Handbuch der spec. Pathologie und Therapie.’ Bd. XII. 2. Hälfte; Artikel ‘Epilepsie und Eklampsie.’ Leipzig, 1877.

[223]. l. c., p. 269.