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 entrance into the milk, and render it poisonous, so that it is very difficult to keep milk in a state of perfect purity. In Africa elaborate rules have been laid down for the conduct of the dairies, saying how the milk should be boiled and preserved, how the vessels should be kept clean, and so on. When so much pains have to be taken in this matter, it is certainly to be considered how far it is worth while to employ milk as an article of food.

Moreover, the purity or otherwise of the milk depends upon the cow's food, and the state of its health. Doctors have testified to the fact that those who drink the milk of consumptive cows fall a prey to consumption themselves. It is very rare to come across a cow that is perfectly healthy. That is to say, perfectly pure milk is very hard to obtain, since it is tainted at its very source. Everybody knows that a child that sucks the breast of its mother contracts any disease that she might be suffering from. And often when a little child is ill, medicine is administered to its mother, so that its effect might reach the child through the milk of her breast. Just in the same way, the health of the man who drinks the milk of a cow will be the same as that of the cow itself. When the use of milk is fraught with so much danger, would it not be the part of wisdom