Another most significant development in agricultural education is the change in attitude towards the college farm. Once it was thought that the college estate should be run as a "model farm." However, a farm that sets a pattern to the farmer must be conducted on a commercial basis; yet it is manifest that it is the province of a college to devote itself to education, not primarily to business. A farm cannot be a "model" for all the kinds of farming of the commonwealth; and if it does not represent fairly completely the agriculture of the state, it misses its value as a pattern. At all events the pattern-farm idea is practically given up. It is then a question whether the farm shall be used merely to "illustrate,"--to display kinds of tools, examples of fences and fields, breeds of stock. This conception of the college farm is comparable with the old idea of "experiments" in agricultural chemistry: the teacher performed the experiments for the students to see. The prevailing idea of the college farm is now (or at least, I think, soon must be) that it shall be used as a true laboratory, as the student in chemistry now works first-hand with his materials instead alone of receiving lectures and committing books. Is a student studying cattle? The herds are his for measurements, testing as to efficiency, studying in respect to heredity, their response to feeding, their adaptability to specific purposes, and a hundred other problems. Cattle are as much laboratory material for the agricultural student as rocks are for the geological student or plants for the botanical student. Technical books were once kept only in libraries; now they are kept also in laboratories and are laboratory equipment. College museums were once only for display; now they are also for actual use by the student. Barns are laboratories, to be as much a part of the equipment of a college of agriculture as shops are of mechanic arts. They should be in close connection with the main buildings, not removed to some remote part of the premises. Modern ideas of cleanliness and sanitation are bound to revolutionize the construction and care of barns. There is no reason why these buildings should be offensive. It was once thought that dissecting rooms and hospitals should be removed from proximity to other buildings; but we have now worked these laboratories integrally into the plans of colleges. Time has now come for a closer assembling of the college barns with the college classrooms. Likewise the entire farm is no doubt to be used in the future as a laboratory, at least in the institutions of university grade--except such part as is used for pure investigation and research. Where, then, shall the student go to see his model barn? To these farms themselves; here a stock farm; there a fruit farm; elsewhere a dairy farm. The shops in the colleges of mechanic arts have long since come to be true laboratories; they do not engage in railroading or manufacturing.