192 °] Allen: Plankton of the San Joaquin River 155 



Table 1. — Organisms Per Cubic Meter in Plankton of 

 Stockton Channel in 1913 — (Continued) 



Peridinium Peridinium Phacus 



cinctum sp. pleuronectes 



2/12 



2/15 1,600 



2/19 16,000 



2/23 



2/26 



3/ 1 6,400 



3/ 5 



3/ 8 



3/12 , . 3^200 



3/15 6,400 



3/19 



3/23 3,200 



3/26 79,344 



3/29 



4/ 2 



4/ 5 1,600 



4/ 9 6,400 



4/13 1,600 



4/16 3,200 



4/19 1,600 



4/23 1,600 



4/26 3,200 



4/30 



5/3 



5/ 7 



5/11 52,896 



5/14 

 5/17 

 5/21 6,400 



5/24 



5/27 



5/31 



6/ 3 158,088 



6/ 7 211,584 



6/11 



6/16 3,200 158,688 



6/18 3,200 317,376 3,200 



6/21 



6/25 



6/28 105,792 



7/ 3 423,168 



7/ 5 3,200 1,005,024 



7/ 9 3,200 



7/12 



7/16 



7/19 



7/23 



7/26 317,376 



7/30 52,896 3,200 



8/ 2 634,752 



8/ 6 1,163,712 



8/ 9 952,128 



8/13 105,792 



8/15 1,745,568 3,200 



8/20 2,168,736 



8/23 1,533,984 



8/27 2,380,320 3,200 



8/31 4,125,888 158,688 



9/ 2 4,178,784 3,200 370,272 



9/ 6 4,866,432 3,200 



