Persons who live largely upon butter emit a strong odour from the skin, very perceptible to those who do not use animal foods. The salt which has to be mixed with it to make it “keep” is not, to the hygienist, a desirable addition, for reasons which will be hereafter stated. Pereira says: “Fixed oil or fat is more difficult of digestion and more obnoxious to the stomach than any other alimentary principle.” Indeed, in some more or less obvious or concealed form, I believe it will be found the offending ingredient in nine-tenths of the dishes which disturb weak stomachs. Many dyspeptics, who have religiously avoided the use of fat in its obvious or ordinary state (as fat meat, marrow, butter, and oil) unwittingly employ it in some more concealed form, and, as I have frequently witnessed, have suffered therefrom. Such individuals should eschew the yolks of eggs, livers (of quadrupeds, poultry and fish) and brains, all of which abound in oily matter. Milk, and especially cream, disagree with many persons, or, as they term it, “lies heavy on the stomach,” in consequence of the butter it contains. Rich cheese, likewise, contains butter, and on that account is apt to disturb the stomach. Schlickeysen, in speaking of the use of butter, eggs, and cheese, remarks: “These cause an excess of fat in the system, and an offensive, slimy, condition of the mucous secretions of the mouth and nose, quite apparent to those who, contrary to their usual habit, eat them. Their effects are apparent also in eruptions upon the skin, especially upon the face.” _Eggs._—Eggs are pretty generally conceded to be a “bilious diet”; and if eaten freely at each meal for a few weeks, the whites of the eyes usually show the presence of bile. They contain an excess of sulphur. The albumen (whites of the eggs) cooked soft, would be less objectionable than the yolks, which contain about 30 per cent. of oil. If eggs are eaten they should be fresh, their use not too frequent, and confined to cool weather. The fowls should be allowed plenty of clean territory to run over, and an abundance of fresh pure water, pure air, and good grains. Unfortunately, the habits of the bird are not the cleanest; it will pick up and eat almost anything that comes in its way. This is why country eggs and country fowl (provided there are good and healthful surroundings) are always to be preferred. In towns or cities the chickens are necessarily confined to the house and yard; whereas in the country they have access to the open fields, and feed largely on grains. Persons who are subject to torpor of the liver would do well to refrain from the use of either eggs or butter; and those who have sound livers—and desire to keep them so—can take a hint!