Milk contains every ingredient to build up the body, which is more than can be said of any other known substance. A child may live entirely, and become both healthy and strong, on milk, and on milk alone, as it contains every constituent of the human body. A child cannot “live by bread alone,” but he might on milk alone! Milk is animal and vegetable—it is meat and bread—it is a fluid, but as soon as it reaches the stomach it becomes a solid—solid food; it is the most important and valuable article of diet for a child in existence. It is a glorious food for the young, and must never, in any case, be dispensed with. How is milk, in the making of cheese, converted into curds? By rennet. What is rennet? The juice of a calf’s maw or stomach. The moment the milk enters the human maw or stomach, the juice of the stomach converts it into curds—into solid food, just as readily as when it enters a calf’s maw or stomach, and much more readily than by rennet, as the _fresh_ juice is stronger than the _stale_. An ignorant mother often complains that because, when her child is sick, the milk curdles, that it is a proof that it does not agree with him! If, at those times, it did _not_ curdle, it would, indeed, prove that his stomach was in a wretchedly weak state; she would, then, have abundant cause to be anxious. “Considering that milk contains in itself most of the constituents of a perfect diet, and is capable of maintaining life in infancy without the aid of any other substance, it is marvelous that the consumption of it is practically limited to so small a class; and not only so, but that in sick-rooms, where the patient is surrounded with every luxury, arrow-root, and other compounds containing much less nutriment, should so often be preferred to it.” Do not let me be misunderstood. I do not mean to say but that the mixing of farinaceous food—such as Lemann’s Biscuit Powder, Robb’s Biscuit, Hards’ Farinaceous Food, Brown and Polson’s Corn Flour, and the like, with the milk, is an improvement—a great improvement; but still I maintain that a child might live and thrive, and that for a lengthened period, on milk—and on milk alone! A dog will live and fatten for six weeks on milk alone! while he will starve and die in a shorter period on strong beef-tea alone! It is a grievous sin for a milkman to adulterate milk. How many a poor infant has fallen a victim to that crime!—for crime it may truly be called.