Note 463 — Chapter IV
Reading edition
Henle (Anatomie Générale, vol. ii. p. 106) says, that the discovery was made in 1649; but the historians of medicine assign it to 1647. Sprengel, Hist. de la Médecine, vol. iv. pp. 207, 405; Renouard, Hist. de la Médecine, vol. ii. p. 173.