If milk is used, it should be thoroughly sterilized; with this precaution, there is less danger of contracting disease from its use. Butter is less harmful when eaten on cold bread than when used in cooking; but, as a rule, it is better to dispense with it altogether. Cheese is still more objectionable; it is wholly unfit for food.[The safeguarding of the purity of all foods of dairy origin is a matter of prime importance. While frequent testing of dairy herds, together with thorough pasteurization and refrigeration, serves to this end, such foods, if from uncertain sources, or if carelessly handled, constitute a serious menace to health; for, as stated in U.S. Department of Agriculture Farmers’ Bulletin No. 1705 by a Government expert, Rowena Schmidt Carpenter: “The same chemical constituents and physical properties that recommend milk as a human food make it an excellent food for bacteria.” The reader will understand that the reference to cheese does not include cottage cheese or foods of a similar character, which were ever recognized by the author as wholesome.—Publishers.]