1920] 



Allen: Plankton of the San Joaquin River 



227 



1913 

 11/22 

 11/30 

 12/ 6 

 12/14 

 12/20 

 12/27 



1913 



1/ 5 

 1/12 

 1/19 

 1/25 

 2/ 2 

 2/ 8 

 2/15 

 2/23 

 3/ 1 

 3/ 8 

 3/15 

 3/23 

 3/29 

 4/ 5 

 4/13 

 4/19 

 4/26 

 5/ 3 

 5/10 

 5/17 

 5/24 

 5/31 

 6/ 7 

 6/16 

 6/21 

 6/28 

 7/ 5 

 7/12 

 7/19 

 7/26 

 8/ 2 

 8/ 9 

 8/15 

 8/23 

 8/31 

 9/ 6 

 9/13 

 9/20 

 9/27 

 10/ 4 

 10/11 

 10/18 

 10/26 

 11/ 1 

 11/ 8 

 11/15 

 11/22 

 11/30 

 12/ 6 

 12/14 

 12/20 

 12/27 



Table 2. — Organisms Per Cubic Meter in Plankton of 

 San Joaquin River in 1913 — (Continued) 



Chydorus Sida _ Total Canthocamptus Cyclops 



sp. 



3,200 



Total 



Copepoda 



3,200 

 6,400 



sp. 



6,400 

 3,200 

 6,400 

 6,400 



6,400 



6,400 



6,400 



6,101) 



400 



400 



2.101) 



105,792 



3,200 

 3,200 



12,800 



12,800 

 6.400 

 6,400 

 16,000 

 28,800 

 32,000 



105,792 



105,792 



3,200 



3,200 

 3,200 



6,400 

 3,200 

 3,200 

 3,200 

 6,400 



6,400 



6,400 



3,200 



