Note 356 — Chapter X
Reading edition
Harvey: On Generation, LXXII, Syd. 517, l. 19-22; Op. Omn. 539, l. 3-5. For the views of Empedocles and Democritus, see Zeller: Philosophie der Griechen, 1 Theil, 2 Hälfte, 5 Auflage, 750-777 and 837-898. For the views of the chemists, see Roscoe and Schorlemmer: A Treatise on Chemistry, Vol. I, 1878, 3-11.