The importance of the inspection of dairy and food products grows out of the fact that not only is the consumer, hence all the world, interested, but the execution of these laws touch large commercial interests. Not only are meat packers, distillers and brewers deeply interested, but the wholesale and retail grocers and, more recently, the manufacturing and prescribing druggists, are vitally concerned. Not many years ago the inspection of dairy products, particularly control of the traffic in oleomargarine, was the chief function of this office. To-day the enforcement of laws concerning pure foods, liquor and drugs is of much greater importance. Interstate commerce in oleomargarine is now regulated through the enactment of an internal revenue law requiring a tax of ten cents a pound on colored oleomargarine and one-fourth of a cent a pound on uncolored oleomargarine and, further, by prescribing the character of package and method of marking all oleomargarine entering into interstate commerce. State agencies are charged with the duty of requiring the compliance of local dealers and restaurateurs with the general features of the federal law. Some states, however, prohibit entirely the sale of colored oleomargarine within the state. PURITY IN DAIRY PRODUCTS Attempts to define what is pure milk, cream, butter or cheese have been fraught with much difficulty. Thus, for example, legal definitions of pure milk have resulted in some cows giving illegal milk. In some instances the law has declared simply that whole milk is milk from which no cream has been removed; in others, the minimum amount of butter fat has been prescribed; in still others, the minimum amount of total solids containing a minimum proportion of butter fat has been made the basis of legal milk. In like manner full cream cheese has been defined as cheese made from whole milk or from milk from which only a given amount of cream has been removed, while in other instances the minimum amount of butter fat which full cream cheese may contain is prescribed. The wide variation in the amount of butter fat carried by cream has caused much jocular comment and some serious discussion as to what is cream. While it is not feasible to indicate the laws for the several states, the ruling of the federal government as to what constitutes purity in dairy products under the national food and drug act may be accepted as a general guide. A circular giving the required information may be secured by addressing the Secretary of Agriculture, Washington, D. C. LIVE STOCK SANITATION The control of contagious diseases in domestic animals and the inspection of meat products have been the chief work of the Bureau of Animal Industry of the United States Department of Agriculture since its establishment.