Note 123 — Chapter II · A HUMAN PAIRING SEASON IN PRIMITIVE TIMES
Reading edition
Wagner, ‘Handwörterbuch der Physiologie,’ vol. iv. p. 862. Gruenhagen, ‘Lehrbuch der Physiologie,’ vol. iii. p. 528. Cf. Haycraft, ‘Some Physiological Results of Temperature Variations,’ in ‘Transactions of the Royal Society of Edinburgh,’ vol. xxix. p. 130.