“Evolution and Disease,” p. 81.
Haeckel: “Evolution of Man,” vol. ii, p. 269.
Sutton: “Evolution and Disease.”
“Descent of Man,” p. 15.
“Evolution and Disease,” p. 81.
Haeckel: “Evolution of Man,” vol. ii, p. 269.
Sutton: “Evolution and Disease.”
“Descent of Man,” p. 15.