Bu. U. S. B. F., 1917-18. 
. ——————— a wea ee ern eee 
} Capy 4/60 Sals mt 
Yi LAP CISTERN 
( Capy. 60.000 Gals 
i? = Ok en FEE OA Y ie eeieiaiesatabe = 
aT Ses Se f-— yp 
Ps ee 2 h 
y / yo A z oe 
of ie z 
£2 RESERVO/R 
N 
L) 
oN \S Capy 2000000 Gals.’ 
OO 
OAS Sas no $ eee 
PONOS SERIES 
4 
Area 0994. 
ZF 
Area 085A 
é 
Area 068A. 
a) 
| ArealogA, 
5. g 
(a a, Area 036A. Area 0.66A. 
Se 
ee 
PONDS SERIES B™ 
Blacksmith Shop 
Fump 
louse Y - 
— a = Yi House 
Quarry Pond 277, 
tid A, POR 
Pump Mouse st Meander of River 
‘ ae i ee 
110307°—21. (To face page 186) 
United States Fisheries Biological Station, Fairport, Iowa. 
