1920] 



Allen: Plankton of the San Joaquin River 



147 



Table 1. — Organisms Per Cubic Meter in Plankton of 

 Stockton Channel in 1913 — (Continued) 



1913 



9/ 9 

 9/13 

 9/17 

 9/20 

 9/24 

 9/27 

 10/ 1 

 10/ 4 

 10/ S 

 10/11 

 10/15 

 10/18 

 10/22 

 10/26 

 10/29 

 11/ 1 

 11/ 5 

 11/ 8 

 11/12 

 11/1.5 

 11/19 

 11/22 

 11/26 

 11/30 

 12/ 3 

 12/ 6 

 12/10 

 12/14 

 12/17 

 12/20 

 12/24 

 12/27 

 12/31 



105,792 

 52,896 



6,400 

 12,800 

 52,896 



12,800 



3,200 



3,200 

 3,200 



800 

 I9,s:iii 



800 

 39,672 



800 

 39,672 



Nitzschij 

 sigmoidei 



Pleurostauron Stauroneis Stephoiiodif 

 parvulum Phoenicenteron sp. 



6,41)0 

 6,400 



6,400 

 6,400 



19,200 



12,800 

 52,896 



6,400 

 1,600 



105,792 

 52.S96 



52,896 



105,792 

 52,896 



.V2.S96 



79,344 

 52,896 



1.1 100 



105,792 



1,600 



33,060 



26,448 

 19,836 

 :;:i,(ir,i) 

 400 

 26,448 

 26,448 



400 

 '400 



1/ 5 

 V 8 

 1/12 

 1/15 

 1/19 

 1/22 

 1/26 

 1/29 

 2/ 2 

 2/ 5 

 2/ 8 

 2/12 

 2/15 

 2/19 

 2/23 

 2/26 

 3/ 1 

 3/ 5 

 3/ 8 

 3/12 

 3/15 

 3/19 



3,200 

 400 



1,600 

 800 



4.800 

 3,200 

 6,400 



3,200 

 3 200 

 3,200 



Synedra 



132,240 

 59,508 

 66,120 

 13S.N52 

 198,360 

 211,584 

 257,868 

 251,256 

 152,076 

 310,764 

 132,240 

 370,272 

 436,092 

 357,048 

 317.376 

 52N.96I) 

 581,856 

 211,584 

 238,032 

 15,S,6SS 

 370,272 

 290,928 



1,163,712 

 452,016 

 915,656 

 3,275,140 

 6,253,140 

 2,858,572 

 774,404 

 1,761,992 

 1,454,828 

 1,948,32,8 

 1, 6tiS, 621 

 1,656,200 

 2,837,136 

 3 641,776 

 1,766,792 

 5,049,120 

 6,834,784 

 6,621,600 

 2,348,224 

 3,206,608 

 2,925,280 

 4.263,892 



400 

 400 



