Edited by Collingwood, London, 1863.
[59] _Philippine Census_, Vol.

I, p.552.Washington, 1903.
[60] F.Ratzel, History of Mankind, Vol.

III, p.106.London, 1908.
[61] Major Charles E.Woodruff, The Effect of Tropical Light on the White Man, New York, 1905, is a suggestive but not convincing discussion of the theory.
[62] W.Z.Ripley, Races of Europe, pp.

74-77.

New York, 1899.
[63] Quoted in G.Sergi, The Mediterranean Race, p.73.London and New York, 1901.
[64] _Ibid._, pp.