26 Indiana University Studies 



Turkey Lake (July 31, 1913) 



Depth in meters 



Tempera- 

 ture 

 Centigrade 



Oxygen 

 cc. per 

 liter 



Free 

 carbon 

 dioxide 



Carbon 

 dioxide 

 as normal 

 carbonates 



Carbon 

 dioxide 

 as 



bicarbonates 



Surface 



27.7 



27.1 



25. 



23.3 



21.6 



19.4 



15.8 



15.5 



5.24 

 5.53 

 6.33 

 5.65 

 5.79 

 3.92 

 1.43 

 .014 



3.03 

 1.26 

 2.02 



7.07 

 4.04 

 5.56 

 6.06 



27.80 

 27.30 

 27.30 

 27.56 

 27.80 

 32.35 

 35.13 

 34.88 





2 meters 





4 meters. ...... 





6 meters 





8 meters 





10 meters 





15 meters 





18 meters 









LiNGLE Lake (July 26, 1913) 



Surface 



23.6 



23.6 



23. 



22.2 



15. 



12.2 

 8.8 

 8.5 

 8.5 



4.60 

 5.38 

 5.50 

 .43 

 .109 

 .103 

 0. 

 0. 



4.29 

 3.03 

 7.07 

 4.8 

 5.56 

 13.65 

 11.62 

 9.35 

 11.88 



30.33 

 32.61 

 29.57 

 29.32 

 35.89 

 35.39 

 36.65 

 36.90 

 37.66 





2 meters 





4 meters 





6 meters 





8 meters 



Acid 



10 meters 



15 meters 





20 meters 





23 meters 











BACTERIA IN THOUSANDS PER LITER 

 Depths in meters form the first column. * = bottom of the lake between 

 that level and the one above. 





Turkey 



Lingle 



Little Eagle 



Eagle 



Eagle 



July 31., '13 



July 27, '13 



Aug. 2, '13 



July 22, '13 



Aug. 6, '13 



Sur- 













face 



696 



90 



800 



5,500 



600 



2. . . 



436 



80 



400 



100 



400 



4.. . 



968 



32 



200 



1,500 



350 



6.. . 



266 



60 



80 



1,900 



400 



8.. . 



154 



192 



160 



115 



150 



10.. . 



220 



234 



34 



21 



120 



15.. . 



120 



122 





20 



120 



20.. . 



*160 



72 





*300 



140 



25.. . 





*106 









