IOWA ACADEMY OP SCIENCES. 95 



TECHNICAL ANALYSIS. 



Calcium oxide (CaO) 103.1 



Magnesium oxide (MgO) 32.3 



Sodium oxide (NajO) 4.8 



Carbon dioxide (CO>) 212.2 



Silica (SiOo) 12.2 



Sulphur trioxide (SO3) 19.4 



Alumina (AI2O3) 7.75 



Ferric oxide ( FseOa) 45 



Manganous oxide (MnO) Trace 



SANITARY ANALYSIS. 



Total solids 388, 



Loss on ignition 131 . 



Nitrogen as free ammonia 034 



Nitrogen as albuminoid ammonia 030 



Nitrogen as nitrates 8 . 100 



Nitrogen as nitrites None 



Chlorine 4 . 000 



Oxygen consuming power 625 



Considering the conditions which surround this well, the 

 water is very much better than one would expect. The 

 analysis shows that it comes within the prescribed limits 

 of a safe potable water, indeed quite as good as the city 

 water. 



Mr. Culbeiison's Well is located a few rods north of the 

 preceding well and is surrounded with practically the same 

 conditions. The results of the analysis are not quite so 

 favorable, however. The analysis was made in the latter 

 part of April, 1901. 



Total solids 569. 



Loss on ignition 203 . 



Nitrogen as free ammonia . 016 



Nitrogen as albuminoid ammonia .046 



Nitrogen as nitrates 39.4 



Nitrogen as nitrites Trace 



Chlorine 5.5 



Oxygen consuming power 1.12 



/. N. Stone's Well, Morningside, is situated on high ground 

 and surrounded by a lawn. It is eighty feet deep and con- 

 tains about two feet of water. When this analysis was 

 made there was a water closet within thirty-five feet and a 

 barn about one hundred feet distant. They have since 



