FINGER L^AKBS OP NEW YORK. 



249 



Table 21 shows the vertical distribution of the organisms in the nannoplankton, 

 indicating the number of individuals per cubic meter of water at the different depths. 

 The forms are as follows: 



Protozoa— A=Amoeba, C=Cryptomonas, F=unidentified asymmetrical flagellate, H=Halteria, 

 M=monads, R=unidentified rhizopods, S=S3rmira, 



Grben and blus-green Ai,G.9e— Ap=Aphanocapsa, Oo=Oocystis, Sc=Scenedesmiis 

 Diatoms— N=Navicula, S=Steplianodiscus, Sy=Synedra. 



Tabi,b 21^ — ^Anai,ysis op Nannoplankton. 



CANANDAIGUA tAKE, JULY 28, 1918. 



CAYUGA LAKE. JULY 30, 1918. 



SENECA LAKE. AUG. :, 191S. 



C 41,656,000 



M x45,Soo,ooo 



C 15,631,000 



M 1 19,-761, 000 



C 5,307,000 

 M 30,828,000 



C 5,307,000 

 M 10,414,000 



C 5, 207, 000 

 M 10,4x4,000 



Ap73, 

 O05, 

 Ap i6x, 

 Oo 10, 

 Ap62 

 Go 15, 



Ap67: 



O026, 

 Ap36, 

 Oo 10, 



898,000 

 207,000 

 417,000 

 414,000 

 484,000 

 621,000 

 691,000 

 03S)000 

 449,000 

 414,000 



S X5,62l;000 



Sy Si 207, 006 



S 15,621,000 



S 15, 621,000 



S 15,621,000 

 S 10,414,000 



30. 

 50. 



75. 

 100 

 135 

 170 



C 5,307,000 

 M 36, 449, 000 



R 5, 207,000 

 M 20,828,000 



M 5,207,000 

 H 15,631,000 

 M 10, 414, 000 



M 5, 307, 000 



Ap 36,449,000 

 Oo 10,414,000 



Ap 63,484,000 

 Ap 72,898,000 

 Ap 67,691,000 

 Ap 46,863,000 

 Ap 67,691,000 



S 10,4x4,000 



S s> 207,000 



S 10,4x4,000 



S 10,4x4,000 



8 5, 307, 000 



S 5,207,000 



GREEN LAKE. WIS.. AUG. 20, 19x8. 



