Gulliver's Travels Full Text: Part 4, Chapter 8 : Page 5
But the _Houyhnhnms_ train up their youth to strength, speed, and hardiness, by exercising them in running races up and down steep hills, and over hard stony grounds; and when they are all in a sweat, they are ordered to leap over head and ears into a pond or river. Four times a year the youth of a certain district meet to show their proficiency in running and leaping, and other feats of strength and agility; where the victor is rewarded with a song in his or her praise. On this festival, the servants drive a herd of _Yahoos_ into the field, laden with hay, and oats, and milk, for a repast to the _Houyhnhnms_; after which, these brutes are immediately driven back again, for fear of being noisome to the assembly.
Every fourth year, at the vernal equinox, there is a representative council of the whole nation, which meets in a plain about twenty miles from our house, and continues about five or six days. Here they inquire into the state and condition of the several districts; whether they abound or be deficient in hay or oats, or cows, or _Yahoos_; and wherever there is any want (which is but seldom) it is immediately supplied by unanimous consent and contribution. Here likewise the regulation of children is settled: as for instance, if a _Houyhnhnm_ has two males, he changes one of them with another that has two females; and when a child has been lost by any casualty, where the mother is past breeding, it is determined what family in the district shall breed another to supply the loss.