When cows eat a quantity of grass in this state, they very often have the disease which is called _hoven_ or _blown_. To make you understand this fearful complaint, I must remind you that cows, in common with all ruminating animals, have four stomachs; and that, when a cow is turned into a field, she twists her tongue round mouthful after mouthful of the long grass, and after biting each off, conveys it without chewing to her first stomach or paunch, till this is about half full, when the animal seems stimulated by nature to seek rest and quiet, for she leaves off eating, and either stands perfectly still in some shady place, or lies down. The paunch now begins to exert its extraordinary power of separating a small portion of the food it contains, and returning it to the mouth, when the animal begins slowly to masticate it, moistening it as she does so with small quantities of water which she draws up from time to time from her second stomach, or honeycomb, in which water is retained for that purpose; and this operation is called chewing the cud. The food, when thoroughly masticated, is conveyed by another channel to the third stomach or many-plies, where it is subjected to muscular action; and, finally, it is conveyed into the fourth stomach, or red bag, which contains the gastric juice, and which in calves is the part used for rennet; and here the process of digestion is completed. Sheep, goats, deer, and camels are all ruminating animals, and are, of course, all furnished with the same apparatus for digestion; but in sheep the paunch is smaller, as they bite close to the ground, and take smaller mouthfuls than cattle; and in camels the second stomach, or receptacle for water, is much larger.