202 Hydraulics of the Mississippi River. 
actual measurements of the quantities computed. As no ade- 
quate idea of the severity and thoroughness of these tests can 
be formed without an inspection of all the data, along with the 
| (Young’s coefficient)........... ei 84:3(rs)?. 
“Chezy ... 4 (Eytelwein’s coefficient) ........ ee 93°4(rs)?. 
(Downing’s and others’ coefficient) y=100-0(rs)?. 
Dubuat...v= UES att id A 0-086(r? — 0°03). 
\ 
In which L= common logarithm multiplied by 2°302585. 
Girard ...v=(2°69-++-26384 r s)* — 1-64 
(For canals)........ v—=(0°0556 +-10593 rs)? —0-2851 
Di Prony (For canals and pipes) v==(0°0237 + 9966 ra) — 0°1542. 
(Eytelwein’s coefficient) v==(0°0119 + 8963 rs)? —0-1080. 
(Weisbach’s coefficient) v=(0-00024-4 8675 rs) —0-0154 
rie »=(Z i) 3 eae 
hag ihm Tae toe ~12A° 
ip Ahn Lie, a 15625 90 15 
Tn which A=0°0000001 (4194+ apie +8 re 00296. 
int Se Sager PRAT oe ees cap aie eee Sk 5 
SETS SERIE RE (ES ge Be EE See Re Oe Ry ema ny Ry ee 
