the same drain be cut 18 in. at top and 8 in. at bottom, tne mean width will be 13 in., and 2.65 cubic yards of earth will have to be removed in cutting eacb rod: so that if the digging of the drain costs 6 cents per cubic yard of earth moved the narrow drain will cost II cents per rod, and the other nearly 16 cents per rod, showing the cost to be one half larger, quite unnecessarily. "The same table will be found useful in helping to fix the relative prices of deep and shallow drains; but it must be recollected that the deeper drains will be increased in cost not only by reason of the greater quantity of earth which has to be moved, but also because of the increased labor of lifting the earth to the surface from a greater depth." ་ NUMBER OF SQUARE FEET AND ACRES THAT A First-class Windmill can Irrigate One Inch in 8 Hours, Raising the Water 10, 15 or 25 Feet. (A. R. WOLFF.) Size of Windmill. 10 Feet. 15 Feet. 25 Feet. 8 ft. diam. of wheel.. Sq. Ft. Acres Sq. Ft. Acres Sq. Ft. Acres 11,736.34 .269 66 7,824.74 .180 4,744.74 .109 ΙΟ 37,161.74 .853 24,774-75 66,765.16 1.533 .569 44,509.85 1.022 6. 66 66 14,767.83 26,134.57 .600 -339 14 85,982.05 1.974 57,321.11 1.316 80,070.76 1.838 34,757.03 49,742.00 1.142 120,106.14 2.757 .798 Expense of Actual Useful Power Developed, in cents per hour. Day First Cost (first For Repairs Mill. Raised Horse During 25 Feet per Hour. which this power Developed. cost including cost of wind and Depre Quantity first cost will be Raised. annum. per annum). mill, pump, and tower) at 5% per For ciation (5% of Attend- For Oil. ance. NOMINAL HORSE-POWER REQUIRED FOR THE DISCHARGE OF GIVEN QUANTITIES OF WATER WITH LIFTS OF 10 AND 20 FEET. (SCOTT.) IRRIGATION. (Yearbook U. S. Dept. of Agriculture.) A water right is the right or privilege of using water for irrigating purposes, either in a definite quantity or upon a prescribed area of land, such right or privilege being customarily acquired either by priority of use or by purchase. In many parts of the arid region a water right is an exceedingly valuable property. The average value of the water rights of the entire arid region, as determined by the census of 1890, was $26 per acre, and there are fruit-growing districts in California where water rights have been sold at as high as $1500 per miner's inch, or from $100 to $500 per acre, according to the amount used on any given area of land. The duty of water is the extent of the service it will perform when used for irrigating purposes, that is, the number of acres a given quantity of water will adequately irrigate under ordinary circumstances. This is usually from 100 to 200 acres for each second-foot. Where water is abundant the duty has been known to be as low as 50 acres, and where very scarce as high as 500 acres, to the second-foot. |