THE FARMER’S SHORT-BOX MEASURING FLUME. if 
that the heads on the crest are not constant for the same upper- 
gauge head, but vary with the height of weir, and therefore care should 
be used to choose the proper column for the head. The discharge 
values given are for a 1-foot width of flume. To find the discharge 
for any width of flume it is only necessary to multiply the discharge 
given in the table by the width of the flume in feet. These tables, 
however, should not be used for flumes less than 1 foot or more than 
4 feet in width. 
TABLE 2.—Free-flow discharges in cubic feet per second, per foot in width of farmer’ s short- 
box measuring flumes. 
3.566 
(P—0.300)p-0164 
{Computed from the formula Q= LD #}.525,] 
2 by 4inch 2by6inch | 2by 8inch 2by12inch | 2by 16inch 
weir, 0.307 feet | weir, 0.450 feet | weir, 0.594feet | weir, 0.907 feet weir, 1.203 feet 
high. high. high. high. | high. 
Pipper sauee | S| | 
head. | | | 
each Disaheron | Dis, Jeet Tis, | Bt pis n | Het | is: 
rest charge. | crest. | charge. | erest. | charge. | crest. charge. | wee charge 
Feet. | Inches. Inches. Sec.-ft.| Inches. | Sec.-ft.| Inches. | Sec-ft. | Inches. | See-ft. | Inches. | Sec.-ft. 
0.20-|.- 23 24 0:33.) © 23e40-0.32 | ae 0.31 25 0.31 | yee 0.31 
-21| 2 24 36 23 34 23, . 34 | 24 33 | Qh .33 
ee ee ee a 2h . 36 | 24 . 36 24 35 
oa See 7 ee oe 23 . 39 | 23 438 23 38 
2A} 2 22. PAE (Dh 42 | 24 41 EB 41 Die | 41 
ee ee Qin 47 | 5 44 | 25 44 235 | 43. 22. | 43 
ae 23 LS fr S24 47 Qu 47 25 | . 46 | 25 | 46 
bi exe 25 5a | , 24) 50 213 49 23 49 23 48 
-28| 3% Seu. oe 248 53 | Qe | 52 25 52 | 25 51 
rr Beers 3 S0ur" 3s 56 | 7 ie! 55 | 214 . 54 | 245 54 
» | | | | 
.30 33 335 . 62 2 59 34 58 | 33 Th H Sas | 57 
=o} 33 | Bhs 65 34 . 62 | 33, 61 | 335 .60 34 60 
ey) 333 325 . 68 | 3 65 3-5, 64 3h . 63 a4. | 63 
.33 345 34 ga ges 68 | sae . 67 | 33 . 66 3 66 
. 34 43, 38 75 5 eE 71 | 34 | 70 34 . 69 ys 69 
35) Ses 33 78 314 74 | 38 te 32. | 73 33°; 72 
a6 |. ae i + aS 82) 32°) 278 | 32 Sic) 344 76 34 75 
.37 4% | 3h 85 Se. bes esting ests 80h roe OE lites tD IG 8 | 7 
38) 4% | = . 88 4 . 84 | 318 . 83 | 3% . 82 34 |" 8 
39} .44¢] 435 |  .92 43, 88 4A. | 87. 4 | 86 315 | 85 
| | 
OW ede 48e1 t 296); 48 | +. 91 4b Mag ead AEC ey. a8 4, | 88 
41 4.8 ie ee a ee 2 94 | 4. | 93 | 4-3, .92 ve .92 
42 5a, | 4h 1.03 43 98 | 43 . 97 | 455 . 96 44 95 
43 Bos} 48 | 107) 4 1.02 | a Vs CeO] 42 99 43 99 
-44| 54 pA] 1.1L) 48 1.05 | Ae | 7.04 44 1. 03 4 1.02 
45) Se) 442) 114) 441 1.09 | 414 1. 08 43 1.06 | 4, | 1.06 
46) 54 43 1.18 43] 1.12 | 43 tit Aes = T10 444 1.09 
47 53 5 1,22 446) 1.16 | Yaa eat i 413 1.14 43 1.13 
48 Be BR | 1.26 5 1.20 | 1s 1.19 4g 17, 4h rhe 
.49 fer St | 130-1" ~ 5¥ 1.24 a 1.22 5 1.21 5 1.20 
. 50 ges 2 adel tasty Woe - | 8 oe 535 1. 26 | 5s 1. 25 Bae | 1.24 
51 6 | 54 | 139 Foi A388 54 1.30 55 1. 29 aN 1. 28 
.52/ 64 Sv | 1.43 5s | 1.36 i ela 55. 1.33 54 1.32 
.53 | 68 54 | 1.47 52 | | 1,40 5h. il £1,358 53 137 53 | 1.36 
54) 64 5} 1.51 5a} | 1.44 Been oy isa Det ae 5s | 1. 40 
55 65 Big | (1.55 53 1. 48 5u 1.4 5g 1. 44 525 1.44 
. 56 63 ls [ie 5g 1. 52 54g 1. 50 5H | 1.48 51. 1.48 
57 18 64 | 1.64 548 | 1.56 BE He I 54 5is 1.53 53 1,52 
. 58 613 6} 1.69 635 | 1.60 6 a) 8 BLS 1.57 58 1.56 
59 |. Ty 63 1.773 6-35 | 1. 64 64 1.63 6 1.61 6 1.60 
. 60 yas Gfe i P1578 63; | 1.69 685 1.67 64 1.65 625 1.64 
61 75 62. |" 1.82 65 |°- 173 655; itis ee | fee oa 1.68 
. 62 ae 644}. 1.87 64 1577 Gis | {1.75 638. 1.73 6+ | 1.72 
.63 Te 613 | 1.91 68 1. 82 6} 1. 80 Se? ag 63 | 1.77 
. 64 7H 6; 1. 96 644] 1.86 68 | 1.84 BM s) | ay pl (82 64 1. 81 
65 iH LAY 2.01 643 | «1.91 63 | 1.89 6-2, 1. 86 6-2; 1. 85 
. 66 733 7 2.05 613 | 1.95 648 | =. 98 644 1.91 6H 1.90 
.67 Sis 7+ 2.10 (ae 2.00 Gti | =—:1.98 644) 1.95 62 1. 94 
. 68 84, 7% 2.15 7 2. 04 7s | 2.02 6; | 2.00 6; 1. 98 
. 69 84 77s! 2.20 74 2.09 Tee") 2007 ( (ono 7 | 2.03 
