Note 102 — III THE BASIS OF THE POPULATION PROBLEM: (2) THE QUALITATIVE ASPECT
Reading edition
Osborn, Evolution of Mammalian Molar Teeth, p. 228. One of the most valuable contributions to the discussion of orthogenesis has been made by Plate, Über die Bedeutung des Darwinischen Selectionsprinzips. Plate concludes that the evidence points to some kind of orthogenesis.