198 



PLANKTON OF WISCONSIN LAKES 



Table 29. The maximum, minimum, and mean amounts of dry or- 

 ganic matter obtained from the net plankton and from the nannoplank- 

 ton of Lakes Monona and Wauhesa. The results are stated in milli- 

 grams per cuhic meter of water. Compare with Lake Mendota, table 

 6 and table 17, 



NET PLANKTON 



NANNOPLANKTON 



1915 

 1916 



8 

 13 



3,746.5 

 5,696.2 



723.0 

 672.1 



2,339.5 

 2,355.6 



4 

 12 



6,143.2 

 4,830.9 



2,871.2 

 801.0 



4,260.2 

 2.977.5 



Table 30. The range of variations in the percentage and in the 

 quantity of nitrogen in the net plankton of Lake Monona, Compare 

 with Lake Mendota, table 7. 



Table 31. Variations in the percentage and in the quantity of crude 

 protein in the net plankton of Lake Monona. Compare with Lake Men- 

 dota, table 8. (Crude protein equals N X 6.25.) 



