1920] Allen: Plankton of the San Joaquin River 153 



Table 1. — Organisms Per Cubic Meter in Plankton or 

 Stockton Channel in 1913 — {Continued) 



C'ryptomonas Dinobryon Eudorina Euglena Euglena Flagellate 



1913 sp. sertularia elegans deses viridis unidentified 



1/ 5 



1/ 8 400 



1/12 800 



1/15 400 



1/19 2,000 



1/22 800 



1/26 800 



1/29 400 2,400 



2/ 2 2,400 



2/5 1,600 19,836 



2/ 8 8,000 



2/12 1,600 



2/15 1,600 



2/19 1,600 20,800 1,600 800 



2/23 6,400 26,448 



2/26 9,600 1,600 1,600 



3/ 1 9,600 



3/ 5 9,600 



3/ 8 3,200 



3/12 1,600 1,600 



3/15 16,000 



3/19 3,200 1,600 



3/23 . . 3,200 52,896 



3/26 9,600 



3/29 57,600 



4/ 2 79,344 



4/ 5 ; 9,600 



4/ 9 6,400 



4/13 9,600 



4/16 9,600 



4/19 3,200 



4/23 1,600 



4/26 3,200 



4/30 1,600 



5/ 3 



5/ 7 



5/11 105,792 



5/14 3,200 



5/17 105,792 



5/21 3,200 



5/24 



5/27 



5/31 6,400 



6/3 6,400 ; 



6/ 7 



6/11 



6/16 6,400 



6/18 10,200 



6/21 6,400 



6/25 12,800 158,688 3,200 



6/28 12,800 



7/ 3 32,000 



7/ 5 3,200 



7/ 9 19,200 211,584 



7/12 6,400 793,440 



7/16 6,400 158,688 



7/19 6,400 



7/23 105,792 



7/26 370,272 



7/30 6,400 423,168 



