EXPEEIMENT STATION EECORD. 



[Vol. 36 



to be indoor spraying, outdoor sod l;uids, seed beds, and small garden plats. 

 The first cost is the smallest of any type of spray irrigation." 



Tests of irrigation pum]?ing plants, F. C. Piatt {Jour. Electricity, S8 

 (1917), No. 3, pp. 79-82). — Efficiency tests on about 350 small irrigation pumping 

 plants are reported. About 90 per cent of these plants consisted of small cen- 

 trifugal pumps either direct or belt connected to electric motors. The results 

 are summarized in the following table : 



Results of tests of irrigation pumping plants. 



Kind of pump. 



Size 



of 



pump. 



Num- 

 ber 

 of 



tests 



Mean 



dis- 

 charge 



per 

 minute. 



Mean 

 suc- 

 tion 

 lift. 



Mean 

 total 

 lift. 



Revolu- 

 tions 

 per 



minute 

 of 



pump. 



Mean 

 input. 



Mean 

 over- 

 all 

 effi- 

 ciency. 



Mean 

 esti- 

 mated 

 efR- 

 cisncv 



of 

 pump. 



Horizontal direct-connected cen- 

 trifugal pumps 



Do. 



Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 



Horizontal belt-connected cen- 

 trifugal pumps 



Do 



Do 



Do 



Do 



Do 



Do 



Do 



Do 



Do 



Do 



Vertical belt-connnected cen- 

 trifugal pumps 



Do 



Do 



Do 



Do 



Do 



Do 



Vertical belt-connected two- 

 stage centrifugal pumps 



Do 



Do 



Do 



Do 



Three-stage centrifugal pumps. . 



Do 



Well turbines 



Plunger pumps 



8 

 10 

 12 



21 

 3 



3h 



5 



Gal. 

 175 

 170 

 260 

 410 

 470 

 675 

 8,S0 



1,125 



115 



172 



337 



310 



375 



410 



560 



690 



1,040 



1,650 



1,980 



150 

 315 

 375 

 495 

 730 

 935 

 1,015 



100 

 300 

 460 

 6.50 

 625 

 300 

 4.-)0 

 750 

 60 



Ft. 

 31 

 45 

 25 

 35 

 34 

 32 

 30 

 32 



25 

 21 

 22 

 23 

 26 

 35 

 27 

 30 

 8 

 28 

 13 



49 

 53 

 38 

 62 

 57 

 46 

 43 



27 



80 

 110 



94 

 103 

 119 

 112 



87 

 133 



1,750 

 1,740 

 1,470 

 1,440 

 1,200 

 1,250 

 1,120 

 1,050 



1,225 

 1,315 

 940 

 1,140 

 800 

 780 

 760 

 650 

 707 

 570 

 440 



1,540 



1,250 



915 



975 



870 

 825 

 840 



2,000 

 1,150 

 1,025 

 1,000 



625 

 1,020 

 1,030 



930 



Kilo- 

 watts. 

 4.3 

 5.2 

 5.4 

 7.8 

 9.3 

 11.6 

 13.2 

 18.6 



2.3 



3.4 

 5.9 



6.7 

 7.3 

 9.7 

 11.8 

 19.4 

 30.5 

 27.0 



.5.1 

 10.9 



7.6 

 15.1 

 20.2 

 23.0 

 22.2 



2.8 

 11.6 

 24.3 

 34.9 

 33.0 

 17.0 

 30.0 

 27.0 



4.1 



P. ct. 

 24.6 

 2.5.7 

 38.4 

 35.5 

 31.1 

 36.4 

 36.4 

 40.0 



26.0 

 23.0 

 21.6 

 10.3 

 25.5 

 38.0 

 24.8 

 32.2 

 8.6 

 29.8 

 27.0 



27.0 

 28. 2 

 35.4 

 38. 1 

 39.6 

 36.2 

 37.4 



18:2 



39.0 

 40.2 

 38.5 

 36.7 

 39.4 

 31.6 

 40.8 

 46.1 



The draining of orchard land, J. M. Ward {Agr. and Stock Dept. Tasmania, 

 Bui. 65 {1916), pp. 8, figs. ?). — Brief general information on tlie subject is given. 



[Iowa] laws relating to drainage, 1916, compiled by Lola S. Elliott {Des 

 Moines, Iowa: State, 1916, pp. 92). — This publication compiled under the direc- 

 tion of W. S. Allen, contains the text of the law. 



[Analyses of water samples, 1916], L. Heimbukger {Fla. Quart. Bui. Dept. 

 Agr., 27 {1917), No. 1, pp. 173-175). — Analyses of 16 samples of imderground 

 waters from different parts of Florida are reported. 



Drinking water, A. T. Chakron {Rpt. Min. Agr. Prov. Quebec, 1916, pp. 113- 

 115). — Analyses of five samples of Quebec waters are reported and discussed. 

 A sample of drainage water from a cheese factory which had been submitted 

 to septic tank treatment showed " that the purifying supposed to be done in the 

 septic tank was far from being perfect." 



