1920] 



Allen: Plankton of the San Joaquin River 



225 



Table 2. — Organisms Per Cubic Meter in Planktqn of 

 San Joaquin River in 1913 — {Continued) 



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 



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 

 9/ 6 

 9/13 

 9/20 

 9/27 

 10/ 4 



12,S00 



3,200 



12,800 

 79,344 

 12,800 

 105,792 

 38,400 

 19,200 

 44,800 

 158,688 

 105,792 



76,800 

 211,584 



128,000 

 64,000 



Polyarthra 

 trigla egg, 



attached female 



317,376 

 51,200 

 38,400 

 12,800 

 25,600 



"76,800 

 25,600 



52,896 

 25,600 

 41,600 

 105,792 

 52,896 

 3,200 



6,400 



12,800 



3,200 



Total 

 Ploima 



5,200 



15,600 



27,436 



45,060 



73,600 



308,240 



516,816 



380,144 



16.S.00O 



937,632 



737,152 



1,022,432 



733,952 



403,024 



286,032 



1,106,768 



293,184 



100,144 



147,200 



150,592 



200, NSX 



182,592 



208,192 



277,088 



464,672 



687,168 



1,002,480 



3,573,584 



1,297,728 



560,768 



1,213,216 



579,968 



1,378,112 



782,052 



1,573,312 



1,067,328 



1,441,920 



903,552 



685,184 



794,368 



Polyarthra 



trigla egg, 



attached male 



211,584 



7,200 



20,000 



SI, 532 



80,308 



197,392 



385,040 



532,816 



472,288 



201,600 



1,070,528 



826,096 



1,210,768 



769,552 



419,024 



287,232 



1,113,168 



293,184 



100,144 



169,600 



156,992 



206,688 



195,392 



220,992 



277,0S8 



467,872 



690,368 



1.005,024 



3,578,384 



1,297.728 



567,168 



1,387,904 



579,968 



1,690,400 



1,201,828 



1,810.496 



1,067,328 



1,518,720 



1,179,136 



842,176 



1,220,160 



12,800 



115,200 



320,000 



264,480 



317,376 



51,200 



52,896 



22,400 



79,344 



79,344 



105,792 



79,344 



Bosmina 

 longirostris 



3,200 



3,200 

 6,400 



6,400 



38,400 



12,800 



76,800 

 51,200 

 25,600 

 12.S00 



rrichocerca 

 capucina 



12,800 



12,800 

 > 11,584 



1,600 



6,400 

 3,200 



1,600 



