The following facts and figures furnished by the owner will give a fair idea of the economic value of this system, as compared with the usual methods of doing the same work. On the farm where it is used, there are raised annually an average of sixty acres of oats, fifty acres of corn, twenty acres of rye, ten acres of buckwheat. Bushels. The oats average, say 30 bushels per acre. 1,800 Corn " 30 " " 1,500 Rye " 20 " " 400 Buckwheat " 20 " " 200 Grinding for self and others. 1,000 It will cost to thrash this grain, shell the corn, and grind the feed with steam power. $285 And sawing wood, 12½ cords. 18 Pumping, one hour per day, 365 days. 36 Churning, half hour per day, 200 days. 10 Washing, half day per week, 26 days. 26 ---- Total. $375 This amount is saved, and more too, as one man, by the aid of the wind mill, will do this work in connection with the chores of the farm, and save enough in utilizing foul weather to more than offset his extra labor, cost of oil, etc., for the machinery. The amount saved each year is just about equal to the cost of a good man. Cost of outfit, $700--just about equal to the cost of a good man for two years, consequently, it will pay for itself in two years. Fifteen years is a fair estimate for the lifetime of mill with ordinary repairs. The solid-wheel wind mill has never been built larger than 30 feet in diameter. For mills larger than this, the latest improved American mill is the "Warwick" pattern. A 30-foot mill of this pattern, erected in 1880, in northwestern Iowa, gave the following results, as reported by the owner: