FISHERY BULLETIN OF THE FISH AND WILDLIFE SEltVICE 



263 



Table 21. — Results of chemical analyses of the waters of Karluk Lake and Thumb Lake in 19S6 



[Tlic results ore stated in milligrams per liter of water. Tr. = Tracc] 



KAIU.IK LAKE. STATION' 1 



i Time a. m. except as noted. 

 ' Time p. m. 



In tables 23 and 24 arc presented the results of temperature and chemical analyses 

 made on 15 affluents of Karluk Lake during the summers of 1935 and 1936. These 

 data,, with the exception of the silica values, agree with the results presented for 1927 

 by Juday, Rich, Kemmerer, and Maun (1932). Variations in temperature, pH, 

 carbon dioxide, soluble phosphorus, and nitrite nitrogen depend, in a large degree, 

 on the time of day observations are made, the number of fish in the streams, and the 

 depth of water in the streams. 



