[162] Prichard. This is admitted by Darwin, who gives other examples, though he insists much on the climatal variations which still remain in feral pigs.
[163] "North American Indians."
[164] Haliburton's "Nova Scotia;" Gilpin's Lecture on Sable Island.
[165] "Principles of Geology;" "Natural History of Man." See also a very able article on the "Varieties of Man," by Dr. Carpenter, in Todd's Cyclopædia.
[166] "The Races of Men," etc. Boston, 1848.
[167] Browne, of Philadelphia, quoted by Kneeland and others.
[168] Todd's Cyclopædia, art. "Varieties of Man."
[169] "Prehistoric Man."
[170] Carpenter in Todd's Cyclopædia.
[171] For an interesting inquiry into the origin of the dog, see the article in Todd's Cyclopædia already referred to; and the subject is fully discussed by Darwin, who leans to the theory of the diversity of origin in dogs.