32 BULLETIN 1067, 17. S. DEPARTMENT OF AGRICULTURE. 
Table 23. — Test of pumping plant, Dalcour drainage district, Dalcour, La., May 26, 1914. 
Time. 
Speed. 
Actual 
lift. 
Discharge. 
Remarks. 
11.10. 
11.30. 
11.55. 
12.20. 
12.40. 
1.10. 
1.40. 
2.15. 
2.50. 
3.25. 
3.45. 
4.40. 
Mean. 
E. p. m. 
Feet. 
Sec.-ft. 
G. v- m. 
209 
4.22 
240.0 
107,810 
210 
4.36 
233.8 
105, 000 
209 
4.57 
230.9 
103,700 
209 
4.53 i 
218.5 
98.2C0 ! 
212 
4.62 
225.0 
101,000 
211 
4.64 j 
224.5 
100, 8 r 
211 
4.75 ! 
223.5 
100,400 
212 
4.81 ; 
218.9 
98,300 , 
Mean 210.4 
211 
210 
210 
210 
210.2 
4.56 
4.90 
5.00 
5.04 
5.07 
5.00 
226.9 101, 9C0 
215.4 
213.4 
211.0 
215.1 
213. 
Uischarge figurw 
be divided by tea, 
95,800 
95,900 
94, SCO 
96,600 
9-i. 02i i 
Fuel, distillate, 42° Baume; total oil used from 
11.10 a. m. to 2.07 p. m., 7S pounds=3.98 
gallons per hour. 
Adjusted carbureter: total oil used from 2.07 
p. m. to 4.26 p. m., 45i pounds = 2.99 gallons 
per hour. 
TEST OF PUMPING PLANT IN SUBDISTRICT NO. 1, LAFOURCHE DRAINAGE DISTRICT 
NO. 20, CUTOFF, LA. 
DESCRIPTION" OF PLANT. 
This plant is made up of two pumping units, each consisting of a 
36-inch centrifugal drainage pump driven by a 2-cylinder 4-cycle 
engine of 120 horsepower at 190 revolutions per minute. The pumps 
have overhead discharge and are really larger than 36 inches, as they 
have an oval discharge flange. A flexible coupling is used between 
engine and pump, but there is no friction clutch. The pumps are 
primed by means of vacuum pumps run b}~ friction drive from the 
flywheels of the main engines. The circulating pumps are of the 
chamber-wheel type. Air tanks and a small compressor driven by 
a gasoline engine furnish an easy and effective method of starting. 
METHOD OF MAKING TEST. 
The quantity of water was measured by means of Pitot tubes and 
the lift was determined by means of gages set in the suction and dis- 
charge canals. The fuel used, a distillate of 43.25° Baume. was 
weighed by means of a spring balance. The engines were started 
by gasoline. The results of the test are shown in table 24. 
Table 24. — Tests of pumping plant in subdistriet Xo. 1. Lafourche drainage district 
No. 20, June 18-22. 1917. 
TEST NO. 1. UNIT NO. 1. 
Time. 
Speed. 
Actual 
lift. 
Discharge. 
Remarks. 
3.50 
R.p.m. 
190 
184 
188 
187 
Feet. 
4.3 
"•4.4" 
Sec.-ft. G.p.m. 
102. S 46, 200 
100.0 44,860 
99. 8 44, 700 
98. 2 44, 100 
1 
4.05 
1 Fuel, distillate of 43.25° Baume; from 3:49 p. m. 
4.20... 
j to 4:49 p. m., 95.25 pounds of fuel used. 
4.35 
Mean 
187.2 
4. 35 
100. 1 44, 965 
