《明史·志·卷四十八》
所有乌兽的肉、皮革、骨角、羽毛，可以供祭祀、宴客、膳食的需要，礼器、军事物资的使用，每年下令各司采集捕猎水生禽类征收十八种，兽类征收十二种，陆生兽类征收十八种，禽类征收十二种，都遵照时令办治。
凡鸟兽之肉、皮革、骨角、羽毛，可以供祭祀、宾客、膳羞之需，礼器、军实之用，岁下诸司采捕。水课禽十八、兽十二，陆课兽十八、禽十二，皆以其时。
The meat, fur, bones, horns, and feathers of all birds and beasts are used for sacrifices, feasts, meals, ritual implements, and military equipment; every year, orders are issued for the various offices to collect and hunt 18 species of aquatic birds and fowl, 12 species of beasts, 18 species of terrestrial beasts, and 12 species of birds, and all of this is done according to season.