

D/ 

 CY 

 NA 

 DA 

 RO 



CE 



A// 



CO 



AP 

 AN 

 LY 



JM 

 ME 

 TA 



FR 



OM 



APR 



MAY 



JUNE 



JULY 



AUG 



^epY 



OCT 



NOI/ 



DEC 



j 



4 



i 



2 



3 



4 



i 



2 



3 



4 



i 



2 



3 



4 



i 



2 



3 



4 



i 



i. 



3 4 



~7^~ 



2 



3 



4 



i 



e 





14. 



1 



z 



3 



































































uzz 



































































r~ 























Mill 





































1 











\ 1 



Fig. 24. — Diagram showing the numerical results for the net plankton of Lake 

 Mendota in 1913. The various forms of plankton organisms are indicated 

 in the explanation on page 60. 



