There are, then, other forms of concentration than the physical one, the amalgamation of smaller units to form larger ones, and very often these forms of concentration go on unperceived and unsuspected. There can be no doubt that this is especially true of agricultural industry. Many branches of farming, as the industry was carried on by our fathers and their fathers before them, have been transferred from the farmhouse to the factory. Butter and cheese making, for example, have largely passed out of the farm kitchen into the factory. The writer recalls a visit to a large farm in the Middle West. The sound of a churn is never heard there, notwithstanding that it is a "dairy farm," and all the butter and cheese consumed in that household is bought at the village store. Doubtless this farm but presented an exaggerated form of a condition that is becoming more and more common. The invention of labor-saving machinery and its application to agriculture leads to a division of the industry and the absorption by the factory of the parts most influenced by the new processes. When we remember the tremendous role which complex agencies outside of the farm play in modern agricultural industry, we see the subject of concentration as it applies to that industry in a new light. The grain elevators, cold-storage houses, creameries, and even railroads, are part of the necessary equipment of production, but they are owned and operated independently of the farm. There is a good deal of concentration of production in agriculture which takes the form of the absorption of some of its processes by factories instead of by other farms. VI