De Rerum Naturâ, v, 1016.
Raciborski (Traité de la Menstruation, p. 43) quotes the observation of an experienced breeder of choice cattle to this effect.
"The organs which in the feral state," as Adlerz remarks (Biologisches Centralblatt, No. 4, 1902; quoted in Science, May 16, 1902), "are continually exercised in a severe struggle for existence, do not under domestication compete so closely with one another for the less needed nutriment. Hence, organs like the reproductive glands, which are not so directly implicated in self-preservation, are able to avail themselves of more food."