Mechanical tests of pumps and pumping plants used for irrigation and drainage in Louisiana in 1905 and 1906 (1907)
Gregory, William Benjamin, 1871-, United States. Office of Experiment Stations · Washington : U.S. G.P.O. · leaf 71
the canal com-pany, total gain or loss and the percentage on investment have beenlaid off on separate scales. 68 Briefly summarizing, it is evident that a canal company can notatford to have any but economical engines, preferably of the com-pound condensing type. The pumps may be high-grade… … Fig. 3.—riagiam showing pi-otits and losses from riant No. I. contrary, are both attributes of high-grade machinery. The propor-tions must be such that 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…
