202 



University of California Publications in Zoology [Vol.22 



Table 2. — Organisms Per Cubic Meter in Plankton of 

 San Joaquin River in 1913 — (Continued) 



1913 



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 



6,400 



12,800 



12,800 

 12,800 

 12,800 



6,400 

 12,800 



1,600 

 3,200 



Cymbella 

 affinis 

 3,200 

 3,200 



105,792 



211,584 

 211,584 

 105,792 



1,600 

 1,600 



Cymbella 



6,400 

 6,400 



25,600 



12,800 



12,800 



12,800 

 6,400 

 6,400 



6,400 



3,200 

 3,200 



6,400 

 19,200 



211,584 



12,800 

 25,600 



6,400 

 19,200 

 52,896 



3,200 

 32,000 



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 



12,800 



3,200 



3,200 

 3,200 

 6,400 

 3,200 

 3,200 



3,200 



6,400 



105,792 



6,400 



423,168 



51,200 



12,800 

 1,600 



11,200 

 3,200 

 1,600 

 6,400 

 3,200 

 6,400 



12,800 

 6,400 



12,800 



Fragillaria 

 capucina 



400 



2,400 



39,672 



9,600 



6,400 



12,800 



12,800 



12,800 



16,000 



28,800 



132,240 



35,200 



22,400 



79,344 



105,792 



158,688 



158,688 



79,344 



19,200 



19,200 



12,800 



51,200 



19,200 



22,400 



79,344 



6,400 



6,400 

 6,400 

 6,400 

 6,400 

 6,400 



1,600 

 6,400 

 1,600 



15S.6S.S 

 105,792 



528,960 



6,400 

 1,600 



3,200 



6,400 

 105,792 



52, 896 



52,896 



79,344 



3,200 



158,6S8 



317,376 



317,376 



158,688 



1,600 



1,600 



3,200 



