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KANSAS UNIVERSITY SCIENCE BULLETIN. 



the water had gone down, there were only 9 parts of chlorine. 

 As the water recedes the chlorine increases again, reaching 80 

 in August, when again there is no water flowing over the dam, 

 and 124 in December. 



Table II. — Analyses of water from the Kansas river, taken about 300 feet below 

 the Lawrence sewers. (Parts per 1,000,000.) 



This series shows the same variation in the constituents with 

 the height of the river as is noted in the analyses made above 

 the dam. Solids, free ammonia, albuminoid ammonia, and 

 oxygen-consuming capacity are higher than above the dam. 

 Nitrites were sometimes present. Chlorine was slightly lower, 

 showing a similar variation noted by Bailey and Franklin* in 

 examination of the water of the river above and below Topeka. 

 The sewage of Lawrence and Topeka is hence lower in chlorine 

 than the water of the Kansas river, fed by rivers rich in chlo- 

 rine. 



* Kan. Univ. Quart. Ill, 91 (1894.) 



