242 KANSAS UNIVfiKSITY SCIBNCE BULLETIN. 



2. The amount of chloria or consequently of common salt is 

 small, a little less than at Chanute, which may be due to dilu- 

 tion with pure waters. 



3. The free ammonia, though rather high in the unfiltered 

 water, is very materially diminished by filtration, and thus the 

 water is improved. 



4. The albuminoid ammonia, which is excessive in the origi- 

 nal water, is very much diminished in the sample supplied to 

 the city, showing that much of the vegetable or organic matter 

 has been removed. 



Considering the whole analysis, then, it is evident that the 

 water is greatly improved by this kind of filtration, and the 

 water that is furnished is of fair quality. There is no doubt 

 that when the water is at its flood stage, without further treat- 

 ment, it would be difficult to furnish a water that is entirely 

 satisfactory. 



NEOSHO RIVER AT CHETOPA. 



Chetopa is situated on the right bank of the Neosho, at a 

 point where there is a sharp curve towards the east. Beyond 

 the city the river runs for six or eight miles before it flows out 

 of the state. As at other points along the river, the difference 

 in the height of the water produces a great difference in its 

 quality and in the rate of flow. During the flood season the 

 river has been twenty-five feet higher than under ordinary con- 

 ditions. 



There is no public water service here, but water is pumped 

 from the river to a tank in the city to use for sprinkling pur- 

 poses. 



As this is the last town of any size in the state on the river, 

 the analysis of the water was made, for comparison with others 

 farther up the stream. 



SANITARY ANALYSIS OF THE NEOSHO RIVER AT CHETOPA. 



Sample taken May 2, 1903. Parts per 



million. 



Total solids 390.4 



Loss on ignition .... 18.9 



Chlorin 7.60 



Free ammonia .060 



Albuminoid ammonia .363 



Nitrogen in nitrates 1 . 021 



Nitrogen in nitrites .000 



Oxygen consumed 3 . 82 



Hardness 176.2 



