108 
IOWA ACADEMY OE SCIENCES. 
NaClandKCl 21.4 
CO 2 free and partly united 61.5 
CaS04 10 2 
Nitrates 0.57 
Free ammonia 0.064 
Albuminoid ammonia 0.088 
8. John Leigh's Well. The depth is one hundred and 
fifty feet of which the last fifty feet are in the Niagara 
limestone. Analyzed May, 1900, by Miss Herrinton. 
Total solids . . 370.6 
CaCOs 215.0 
MgCOs 102.9 
Si02 20.8 
FeaOs and AI 2 O 3 7.8 
NaClandKCl 6.6 
NasCOs and K 2 CO 3 , . 10.00 
CO 2 free and partly united 162.00 
Sulphates 0.00 
Nitrates 0.57 
Free ammonia 0.00 
Albuminoid ammonia 0.00 
4. G. W. Young's Well. This is in the same locality as 
Mr. Leigh’s. The well is one hundred and fifty-three feet 
deep, of which fifty- three feet are in the Niagara lime- 
stone. The analysis was made May, 1900, by F. E. 
Welstead. 
Total solids 348.3 
CaCOs 230.0 
MgCOs ., 73.9 
S.iOa 20.4 
FeaOs and AI 2 O 3 3 09 
NaCl... 19.00 
KC1 trace. 
CO 2 free and partly united 159.00 
Sulphates 0.00 
Nitrates 1.00 
Free ammonia 048 
Albuminoid ammonia 072 
5. The Mount Vernon City Water. The well is three 
hundred and thirty feet deep and extends three hundred 
and fifteen feet into the Niagara limestone. It goes 
nearly through the Niagara, as shown by thin layers of 
shale that were found near the base of the boring, trans- 
itional to the heavy shales of the Maquoketa stage, beneath 
