Note 2 — SECTION I.
Reading edition
“The sole action of the laws of Hybridity,” says Nott, “might exterminate the whole human species if all the various types of human beings actually existing on the earth were completely to amalgamate.” Types of Mankind, p. 407, eighth edit., Philadelphia, 1857. Dr. Robert Knox is not less explicit. “I do not believe that any Mulatto race can be maintained beyond the third or fourth generation by Mulattos merely; they must intermarry with the pure races or perish.” Robert Knox, The Races of Men, London, 1850.