Jan. 11, 1888.
Footnotes for Essay VII.
[275]. See the [second Essay].
[276]. Consult ‘Ueber die Vererbung,’ Jena, 1883; ‘Die Kontinuität des Keimplasmas,’ Jena, 1885; ‘Ueber die Zahl der Richtungskörper und über ihre Bedeutung für die Vererbung,’ Jena, 1887. These papers are translated as the [second], [fourth] and [sixth] Essays in the present volume.
[277]. See the [second] Essay.
[278]. [See R. Meldola in Ann. and Mag. Nat. Hist., 1878, vol. i. pp. 158-161. The author discusses many cases among insects in which instinct is related to protective structure or colouring: he also considers that instinct is to be explained by the principle of natural selection which accounts for the other protective features.—E. B. P.]
[279]. [See ‘Nature,’ vol. 36, pp. 491-507.—E. B. P.]
[280]. [See ‘The Factors of organic Evolution’ in ‘The Nineteenth Century’ for April and May 1886.—E. B. P.]
[281]. See ‘Biol. Centralbl.’ Bd. VII. No. 23.