112 
Journal of Agricultural Research 
Vol. IX, No. 4 
The agreement of the discharge formula with the experimental data 
is shown in Table IV to be within a mean of approximately 0.5 per cent, 
but there are a few individual points more than 1 per cent off. 
Table IV .—Difference between discharge obtained by experiment and as computed from 
theformula 
Experimental 
Computed 
Discharge (cubic feet 
discharge com¬ 
discharge com¬ 
per second). 
pared with 
pared with 
curve. 
curve. 
Differ- 
Size 0! orifice. 
ence of 
beads. 
From 
aver¬ 
age 
Com¬ 
Differ¬ 
Differ¬ 
From 
experi¬ 
ment. 
puted 
from 
for¬ 
ence 
(cubic 
feet per 
Per 
cent. 
ence 
(cubic 
feet per 
Per 
cent. 
curve. 
mula. 
second). 
second). 
Square feet. 
Feet. 
0.5 by s,o foot (exact area, 0.4997 
[ 0.1 
0.756 
0. 756 
0. 751 
0.000 
0.00 
—0.005 
-0.66 
J *4 
i. 5 2 5 
1.S25 
x. 521 
.000 
. 00 
— .004 
— .26 
square foot). 
1 .6 
1.876 
3.163 
1-873 
2.167 
x. 869 
2. 164 
+.003 
—.004 
-f- . 16 
— . 31 
“ -14 
1 -8 
- .18 
— .003 
0.5 by 1.s feet (exact area, 0.7521 
( - 1 
1.141 
1.141 
x. 140 
. 000 
.00 
— • OOI 
— .09 
J -3 
1.987 
1.983 
I. 986 
+.005 
+ .25 
4- .004 
4- .20 
square foot). 
1 • 5 
2.548 
2. SS9 
2- 571 
—.on 
- , A% 
4* • 012 
4- .47 
t -8 
3* 239 
3-237 
3-259 
+.002 
4- . 06 
4- .022 
4* .68 
0.5 by a.o feet (exact area, 0.9996 
f - 1 
1.5H 
I- 517 
I- S3© 
—. 006 
— .40 
4- .013 
4* .86 
J *3 
3.636 
2.638 
2.652 
—. 002 
- .08 
4- .014 
4- -53 
square foot).. 
1 -S 
3- 404 
3-407 
3.426 
—* OO^ 
— * 00 
4- .019 
4- .56 
l J 
* WO 
* wy 
4.318 
4*314 
4- 335 
+. 004 
+ .09 
4- .021 
4- .49 
z.o by 3.0 feet (exact area, 2.0001 
f -I 
3* 108 
3- 114 
3.100 
—. 006 
- .18 
— .014 
— -45 
J -3 
5*407 
s- 398 
5-386 
+.009 
4* .17 
— .012 
— . 22 
square feet). 
1 -5 
6.969 
8.814 
6. 966 
8.815 
6.964 
8.821 
+.003 
—.001 
4" • 04 
— .002 
4- .006 
— • o* 
l J 
— .01 
4- *07 
1.0 by 3.0 feet (exact area, 2.9997 
f -i 
4- 785 
4. 781 
4.776 
+.004 
+ .08 
— .005 
— . 10 
J -3 
8.158 
8.170 
8. 209 
—. 012 
- - IS 
+ .039 
4- .48 
square feet). 
1 • 5 
10.471 
10. 476 
io- 559 
-, OOS 
— . o< 
+ -083 
4- . -TO 
l .8 
13.186 
13.186 
13.312 
.000 
• OO 
4- . 126 
4- .96 
z.o by 4.0 feet (exact area, 3.9970 
f •* 
6. 505 
6.471 
6.486 
+.034 
+ *52 
4- .015 
4- .23 
J *2 
8.983 
9. 062 
9- 085 
—.079 
— .97 
4- .023 
4- .35 
square feet)... 
1 • 4 
12. 682 
12. 688 
X2. 722 
l6. 699 
—. 006 
—.058 
. rttf 
4- . CilA 
l .7 
16.603 
16. 661 
• '■O 
“ -35 
4- .038 
* • *7 
4- .23 
1.5 by 3.0 feet (exact ?rea, -4.4998 
square feet).. 
f . I 
7.428 
7- 430 
7-4H 
—.002 
— .03 
— .019 
— . 26 
1 * 3 
1 ' 4 
10. 507 
14. 888 
10.471 
14- 750 
10.414 
14.638 
+.036 
+ .I38 
+ *34 
+ *94 
— .057 
— . 113 
“ *54 
— .76 
•5 
16.488 
16.474 
16.332 
4-. 014 
+ .09 
- .143 
— .86 
1 -6 
18.103 
18. 030 
17- 863 
+•073 
+ .40 
- .167 
- .93 
. 10 
10.155 
10.170 
10. 172 
-.015 
- .15 
+ .002 
4- .02 
• is 
12.43 S 
12. 365 
12.361 
+.070 
+ .57 
— .004 
— .03 
1.5 by 4.0 feet (exact area, 6.0006 
. 20 
14. 2 75 
14. 181 
14.196 
+.094 
4- .66 
4- .015 
4- .ir 
square feet). 
•25 
IS- 741 
IS-813 
15.803 
—.072 
— .45 
— .010 
— .06 
.30 
17-313 
17. 258 
17- 253 
+•055 
+ .33 
— .005 
— .03 
•339 
18. 39S 
18. 302 
18. 297 
+.096 
+ • 52 
— .005 
— .03 
.363 
18. 919 
18. 915 
18. 909 
+.004 
+ .02 
— *006 
— .03 
1.5 by 4.5 feet (exact area, 6.7513 
f - 1 
11.356 
n-479 
11.576 
—. 123 
— 1.07 
4- .097 
4- .85 
1 2 
IS- 978 
IS- 993 
16.114 
—.015 
— .09 
4- •121 
4- .76 
square feet). 
1 ,3S 
17. 865 
17, 701 
+-074 
4- A 1 
if* # j 
4- tA 
1 * 43 
l • 283 
18.818 
18.880 
19. 016 
—.06a 
“ -33 
4- . 136 
4- . 73 
[ .05 
10. 512 
10.407 
10. 239 
+• 105 
+1.01 
— .168 
— 1.61 
3.0 by 4.0 feet (exact area, 8.0065 
.10 
14.498 
14.481 
14- 241 
+.017 
4*. 12 
— . 240 
— 1.66 
square feet). 
.10 
14* 398 
X4- 481 
14. 241 
—. 083 
— .57 
— . 240 
— 1. 66 
•IS 
17.671 
17- 571 
17.270 
4-. 100 
+ *57 
— .301 
— 1. 71 
1 -IS 
17. 810 
17.571 
17270 
+.239 
+1.36 
— .301 
-1. 71 
a.o by 4.5 feet (exact area, 8.9990 
1 !o 
XI. 710 
11*714 
II. 72a 
—. 004 
— .03 
4- .008 
4- .07 
square feet). 
\ - io 
r6.368 
16.379 
16. 249 
—. on 
— .07 
— .130 
— .79 
\ . 125 
xS. 276 
x8. 260 
18. 047 
+.016 
+ *09 
- .213 
-1.17 
