How is it converted into blood ? How does the blood circulate ? And how is the body nourished and kept in health ? Are questions of the greatest importance in their relation to public health and morality, and should be generally taught in our schools. The following may be taken as correct as to the qualities of human food mentioned, and their characteristics when introduced into the stomach. Beef: When it is the flesh of a bullock of middle age, it affords good and strong nourishment, and is peculiarly well adapted to those who labor, or take much exercise. It will often sit easy upon stomachs that can digest no other kind of food; and its fat is almost as easily digested as that of veal. Veal is a proper food for persons recovering from indisposition, and may even be given to febrile patients in a very weak state, but it affords less nourishment than the flesh of the same animal in a state of maturity. The fat of it is lighter than that of any other animal, and shows the least disposition to putrescency. Veal is a very suitable food in costive habits; but of all meats it is least calculated for removing acidity from the stomach. Mutton, from the age of four to six years, and fed on dry pasture, is an excellent meat.

It is of a middle kind between the firmness of beef and the tenderness of veal. The lean part of mutton, however, is the most nourishing and conducive to health, the fat being hard of digestion. The head of the sheep, especially when divested of the skin, is very tender; and the feet, on account of the jelly they contain, are highly nutritive. Lamb is not so nourishing as mutton; but it is light and extremely suitable to delicate stomachs. House lamb, though much esteemed by many, possesses the bad qualities common to the flesh of all animals reared in an unnatural manner. Pork affords rich and substantial nourishment; and its juices are wholesome when properly fed, and when the animal enjoys pure air and exercise. But the flesh of hogs reared in towns is both hard of digestion and unwholesome. Pork is particularly improper for those who are liable to any foulness of the skin.