. Farm development; an introductory book in agriculture, including a discussion of soils, selecting & planning farms, subduing the fields, drainage, irrigation, roads, fences, together with introductory chapters concerning farm business, and the relations of general science to agriculture . Avill flow through a square inch of opening in a secondwith the water held at a given height above the open-ing. The conditions for measurement are defined 258 DEVELOP-MENT by law in most of the western states, the conditions dif-fering in different states. In Figure 153 is shown the constructi
. Farm development; an introductory book in agriculture, including a discussion of soils, selecting & planning farms, subduing the fields, drainage, irrigation, roads, fences, together with introductory chapters concerning farm business, and the relations of general science to agriculture . Avill flow through a square inch of opening in a secondwith the water held at a given height above the open-ing. The conditions for measurement are defined 258 DEVELOP-MENT by law in most of the western states, the conditions dif-fering in different states. In Figure 153 is shown the construction of a box formeasuring the flow of water in miners inches. Formulaeare also used for the calculation of the amount of waterflowing from weirs of a given construction with the waterabove standing at a given height. The United StatesDepartment of Agriculture, the State experiment sta-tions of Colorado, Wyoming and other states, have pub-lished bulletins treating of the measurement of irriga-tion water, which can besecured by those needingdetailed information. As a unit of measur-ing water for irrigation])urposes. the minersinch is not so generallyused as the cubic footIn recording measure-water, the miners Figure Plank .sfiaper fu: per second, or the acre footments of large quantities ofalthough fairly accurate, is too small a unit. The miners inch is a unit of rate of the discharge ofwater expressed in terms of a standard orifice or outletopening, usually 1 inch square, and a standard head.* Indifferent states this head varies from 3 to 9 inches, butthe head most commonly used is 6 inches. Under ahead of 6 inches and coefficient of , the dischargethrough a i-inch orifice would be cubic feet persecond or United States gallons (of 231 cubicinches). Usually the orifice is of fixed depth and ad-justable length. (See Figure 153.) The standard headof 6 inches (in sketch the head is marked by block B, 6inches long and tacked on side of box), or w
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
