It is a noteworthy fact, that during periods of agricultural depression experienced in the United States during the nineteenth century, the products of the dairy have maintained relative values above all other farm products, and dairy districts seem to have passed through these periods with less distress than most others. The greater part of this country, geographically, being well adapted to dairying, this branch of agriculture has always been prominent in America, and its extension has kept pace with the opening and settlement of new territory. For many years a belief existed that successful dairying in the United States must be restricted to narrow geographical limits, constituting a “dairy belt” lying between the fortieth and forty-fifth degrees of latitude, and extending from the Atlantic Ocean to the Missouri River; and the true dairying districts were felt to be in separated sections occupying not more than one third of the area of this belt. These ideas have been exploded. It has been shown that good butter and cheese can, by proper management, be made in almost all parts of North America. Generally speaking, good butter can be profitably produced wherever good beef can. Decided advantages unquestionably exist, in the climate, soil, water, and herbage of certain sections; but these influences are largely under control, and what is lacking in natural conditions can be supplied by tact and skill. So that, while dairying is intensified and constitutes the leading agricultural industry over wide areas, including whole States, where the natural advantages are greatest, the industry is found well established in spots in almost all parts of the country, and is developing in unexpected places, and under what might be considered as very unfavorable conditions. Dairying existed in colonial times in America, and butter and cheese are mentioned among the early exports from the settlements along the Atlantic coast. But this production was only incident to general farming. Dairying, as a specialty in the United States, did not appear to any extent until well along in the nineteenth century. The history of this industry in this country is therefore identical with its progress in that century. This progress has been truly remarkable. The wide territorial extension, the immense investment in lands, buildings, animals, and equipment, the great improvement in dairy cattle, the acquisition and diffusion of knowledge as to economy of production, the revolution in methods and systems of manufacture, the general advance in quality of products, the wonderful increase in quantity, and the industrial and commercial importance of the industry, have kept pace with the general material progress of the nation and constitute one of its leading features.