CHAPTER IV
THE NEW COSMOLOGY—COPERNICUS TO KEPLER AND GALILEO
(1) (p. 62). Copernicus, uber die Kreisbewegungen der Welfkorper, trans. from Dannemann's Geschichle du Naturwissenschaften, 2 vols., Leipzig, 1896.
(2) (p. 90). Galileo, Dialogo dei due Massimi Systemi del Mondo, trans. from Dannemann, op. cit.