[[8]]
See Appendix II.

[[9]]
American Prisons, 1888.

[[10]]
Cf. E. Ferri. I Nuovi Orizzonti del Diritto e della Procedura Penale.

[[11]]
The various types of Jews also afford a striking instance of the effect of natural surroundings on bodily structure.

[[12]]
Ratzel. Völkerkunde, i. 20.

[[13]]
Darwin says that in elaborating his theory of Natural Selection he attributed too little to external surroundings. Life and Letters.

[[14]]
Physique Sociale, ii. 282.

[[15]]
Zeitschrift für Strafrechtswissenschaft, ii., 486.

[[16]]
Gli omicidii in alcuni stati d'Europa. Appunti di statistica comparata del Dr A. Bosco, 1889.

[[17]]
For the high percentage of infanticide in England see the evidence given before the House of Lords last July (1890) by Judges Day and Wills.