1920] 



Allen: Plankton of the San Joaquin River 



151 



1913 

 11/30 

 12/ 3 

 12/ 6 

 12/10 

 12/14 

 12/17 

 12/20 

 12/24 

 12/27 

 12/31 



Table 1. — Organisms Per Cubic Meter in Plankton of 

 Stockton Channel in 1913 — (Continued) 



400 



Total 

 Chlorophyll 



1913 bearing 



1/ 5 1,197,572 



1/ 8 456,016 



1/12 917,256 



1/15 4,255,716 



1 /19 7,257,952 



1/22 3,024,248 



1/26 1,059,168 



1/29 2,079,556 



2/ 2 1,513,724 



2/ 5 2,157,088 



2/ 8 2,259,656 



2/12 1,950,704 



2/15 3,675,424 



2/19 5,542,136 



2/23 2,528,560 



2/26 6,268,080 



3/ 1 7,113,336 



3/ 5 7,019,072 



3/ 8 2,755,296 



3/12 3,322,000 



3/15 3,488,592 



3/19 4,599,504 



3/23 4,686,212 



3/26 3,117,568 



3/29 3,179,968 



4/ 2 2,697,600 



4/ 5 3,666,576 



4/ 9 7,647,576 



4/13 4,755,648 



4/16 12,156,384 



4/19 11,976,896 



4/23 20,939,568 



4/26 20,254,224 



4/30 19,542,624 



5/ 3 22,294,816 



5/ 7 21,378,688 



5/11 35,355,328 



5/14 64,300,640 



5/17 50,683,376 



5/21 42,053,824 



5/24 45,854,640 



5/27 77,086,976 



5/31 83,517,888 



6/ 3 90,601,152 



Cercomonas Chlamydomonas Chromulina 



3,200 



945,516 

 958,740 



99,180 

 251,256 

 271,092 



13,224 

 152,076 

 462,840 

 251,256 

 317,376 

 1,481,088 

 277,704 

 687,648 

 423,168 



1^600 



79,344 



158,688 



423, 16S 



79,344 



1,600 



1,600 



317,376 



52,896 



290,928 



158,688 



132,240 



79,344 



52,896 



132,240 



105,792 



317,376 



261 I si) 



1,322,400 



105,792 



