During 1876 Mr. William Cooley, of Washington County, Vermont, discovered a system of butter-making which has worked a complete revolution in dairying. The honour of the discovery that cream could be raised within twelve hours, or between milkings, belongs to Mr. Cooley alone. The value of the discovery can hardly be computed. The saving in cost of apparatus, the increased quantity of butter obtained during the hot weather, and the value of the milk after parting with its butter, will add considerably to the profits of the dairymen.