Mechanical tests of pumps and pumping plants used for irrigation and drainage in Louisiana in 1905 and 1906. (1907)
U.S. Department of Agriculture, Office of Experiment Stations · Washington : Govt. Print. Office · leaf 69
d the percentage on investment have beenlaid off on separate scales. 68 Briefly summarizing, it is evident that a canal company can notafford to have any but economical engines, preferably of the com-pound condensing type. The pumps may be high-grade centrifugalsor rotary pumps, according to the… … Fig. 3. Diagram showing profits and losses from Plant No. I. contrary, are both attributes of high-grade machinery. The propor-tions must be Mich thai an accident to a portion of the machinery willnot paralyze the entire plant. There should be at least two units, andthe figures given in this…
