BARTOW: SANITARY CHEMICAL WATKR ANALYSES. Ill 



It is interesting to note the small amount of chlorine in the 

 southern part of the state, out of the valley of the Kansas river. 



SUMMARY. 



The analyses of the river water given in tables I-V show a 

 direct variation of solids in suspension, and a direct variation 

 of organic material with the height of the water, and an in- 

 verse variation of soluble ingredients with the height of the 

 water. 



A comparison of tables I and II shows that the Lawrence 

 sewers have a little effect on the river. This is scarcely ob- 

 servable in the comparative tests we have made, as most of 

 them were made at high stages of the river. 



Tables I-V show that very little difference could be observed 

 in samples taken from different places in the river near Law- 

 rence. 



A comparison of tables I and V shows that filtration removes 

 a great part of the solids and very much decreases the organic 

 matter. 



In tables VI, VII, IX, and X, analyses of water from wells 

 and springs in the city of Lawrence and vicinity show that 

 chlorine cannot be taken ac indicating contamination. No 

 chlorine map of the district could be made. The chlorine and 

 solids vary directly with the depth of the wells, and in wells of 

 equal depth increase toward the east. Softest waters and 

 those with least chlorine are found on the hills southwest of the 

 city. Nitrates are sometimes very high in what are apparently 

 pure waters. (See especially table VII.) 



Analyses of water from the Lawrence Water Company's sys- 

 tem (table VIII) compared with the analyses of the river water 

 (tables I and V), samples taken on the same days, show wide 

 differences in the soluble constituents, thus showing that the 

 water from the wells is very different from river water. In 

 this connection, we especially note that the chlorine in the water 

 company's water, though varying in the analyses made, is much 

 less variable than that in the river water. Abnormal free am- 

 monia in the water taken from the fountain is remarkable and 

 worthy of further investigation. 



The few analyses of water from rivers in different parts of the 

 state (table XII) show variations due to the geological forma- 

 tion in their respective localities, and a further study of them 

 promises interesting results. 



