The California fruits and how to grow them; . ngwide enough to cover the opening on the up-stream side. In the * Full details of the cost and flow from pumps drawing from various depths andoperated by various motors are given in the publications of the Irrigation Investiga-tions to which reference has previously been made. THE MINERS INCH 211 slot there is a closely-fitting block, made to slide on the bevelededges and fastened by a screw to the sliding board. It is obvious,then, that when the sliding board is moved backward or forward,by means of its end, which is extended for a handle, the bl
The California fruits and how to grow them; . ngwide enough to cover the opening on the up-stream side. In the * Full details of the cost and flow from pumps drawing from various depths andoperated by various motors are given in the publications of the Irrigation Investiga-tions to which reference has previously been made. THE MINERS INCH 211 slot there is a closely-fitting block, made to slide on the bevelededges and fastened by a screw to the sliding board. It is obvious,then, that when the sliding board is moved backward or forward,by means of its end, which is extended for a handle, the blockmoves in the slot and determines the length of the opening. In operation the board is placed in the stream as shown in thefigure, so as to dam the flow completely, and the sliding board ismoved backward or forward until the water is all passing throughthe slot, the water being kept up to the top of the board, or 4inches above the center of the opening. The length of the openingmeasures the number of miners inches of water flowing Measuring miners inches in a small stream or ditch. If the flow is too great to pass through the opening 1 inch wide,the opening may be made wider, the water still to be kept 4 inchesabove the center of the opening. The laws of several Statesprovide that in devices for measuring water for sale by the minersinch the opening shall be 6 inches high and shall be provided witha slide as shown in the picture. The number of miners inchesthen discharged is equal to the number of square inches in theopening. The assumption made that the discharge is proportionalto the size of the opening is not true, but the error in measuringsmall quantities is not great enough to be taken into converting the results of measurements in miners inches togallons, cubic feet, or some other familiar unit, it may be deter-mined how long it will take the stream to fill a reservoir or covera given field with the necessary depth of water. This unit is read
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfruitculture, bookyea
