Note 1181 — Chapter XXV
Reading edition
So far as the domestic animals are concerned, it is true that they throw off their young in the spring. The reference to a similar interruption in the case of mankind (see above, p. 571) may embody the recollection of a period when a regular pairing season and breeding time existed among mankind. See Westermarck, The History of Human Marriage, pp. 27 seq.