FINGER LAKES OF 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=Atnoeba, C=Cryptomonas, F=unidentified asymmetrical flagellate, H=Halteria, 



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



Green and blue-green alg^ — ^Ap=Aphanocapsa, Oo=Oocystis, Sc=Scenedesmus 

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



T.\Bi.E 21. — Analysis of Nannoplankton. 



CANANDAIGUA LAKE. JULY 38, 1918. 



CAYUGA L.\KE. JULY 30, 1918. 



SENECA LAKE. AUG. i. 191S. 



C 41,656,000 



M 145,800,000 



C 15,621,000 



M 119, 761.000 



C 5, 207,000 

 M 20,828,000 



C 5, 207,000 

 M 10,414,000 



C 5, 207.000 

 M 10,414,000 



Ap 72. 

 O05. 

 Ap 161, 

 Oo 10. 

 Ap62, 

 O015, 

 Ap67, 

 O026, 

 AP36 

 Oo 10 



898,000 

 207,000 

 417,000 

 414,000 

 484.000 

 621,000 

 691,000 

 035,000 

 449.000 

 414,000 



S 15.621,000 

 Sy 5. 207.000 

 S 15,621,000 



8 15,621,000 

 8 15,621,000 

 S 10.414,000 



30. 



i 50. . 

 75.. 

 100. 

 135- 

 170. 



C 5,207,000 

 M 36.449.000 



R 5,207,000 

 M 20.828,000 



M 5. 207,000 

 M 15,621,000 

 M 10,414,000 



M 5, 207,000 



Ap 36.449,000 

 Oo 10,414.000 



Ap 62,484,000 

 Ap 72.898,000 

 Ap 67,691.000 

 Ap 46,863,000 

 Ap 67,691,000 



S 10,414,000 



S 5,207,000 



S 10,414,000 



8 10,414,000 



S 5, 207,000 



S 5, 207,000 



GREEN LAKE. WIS., AUG. 20. 1918. 



