1920] 



Allen: Plankton of the Swn Joaquin River 



209 



Table 2. — Organisms Per Cubic Meter in 

 San Joaquin River in 1913 — (Conti 



1913 



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 

 10/11 

 10/18 

 10/26 

 11/ 1 

 11/ 8 

 11/15 

 11/22 

 11/30 

 12/ 6 

 12/14 

 12/20 

 12/27 



Spirogyra Staurastrum Staurastrum 



1,600 

 3,200 



3,200 



12.S00 



3,200 

 1,600 



1,600 



52,896 



105,792 



12,800 



158,688 



6,400 



476,064 



211,584 



423,168 



317,376 



211,584 



740,544 



1,057,920 



740,544 



211,584 



211,584 



105,792 



1,600 

 1,600 



1,600 



1,600 



3,200 



1,600 



3,200 

 3,200 

 423.16S 

 105,792 

 317,376 

 423,168 



317J376 



105,792 

 105,792 



105,792 

 105,792 



Total 

 Conjugatae 



3,200 



11,200 



6,400 



252,432 



3,200 



6,400 



3,200 



6,400 



9,600 



12,800 



12,'SOO 



6,400 



17,600 

 60,896 

 667,600 

 392,672 

 653.952 

 838,240 



1,205,292 

 532,160 

 865,536 



5,206,608 

 817,344 



1, Noli. Mil 



1,599,680 

 766,144 



423,068 

 660,350 

 105,792 



6,400 



62J688 



6,400 

 9,600 

 3,200 

 4,800 

 5,200 

 80,944 



Plankton of 

 nued) 



Total 



Chlorophyll 



bearing 



11,562,384 



10,227,840 



16,907,984 



5,806,320 



9,506,848 



1 1,702.392 



11,812,464 



8,145,788 



10,720.192 



17,202,816 



12,260,192 



24,202,408 



24,771,432 



17,318,816 



20,548,016 



31,173,494 



15,385,292 



30,992,964 



5S.626.2S0 



60,004,896 



114,102,688 



100,712,962 



101,975,404 



214,321,570 



196,911,420 



226,118,120 



148,511,000 



137,149,848 



90,015,440 



90,224,744 



147,152,542 



84,014,960 



58,621,362 



29,859,648 



14,369,824 



11,064,384 



13,861,008 



22,7i is, :;:;»; 



16,767,936 



9,313,272 



7,212,112 



6,237,032 



11,291,504 



9,487,296 



15,208,872 



5,957,008 



9,134,224 



14,595,000 



11.634,5711 



7,879,708 



10,508,608 



17,074,624 



12,14S,000 



23,197,384 



23,848,336 



16.751,656 



20,261,432 



31,110,998 



14,671,196 



29,847,700 



52,641,128 



52,222,784 



111,119,-188 



97,689,996 



99,939,656 



210,788,834 



193,606,268 



221,453,864 



143,032,200 



133,713,304 



85,113,408 



82,463,528 



141,298,382 



75,340,016 



50,145,202 



25,702,368 



10,931, 5S4 



6,836,096 



6,791,392 



18,321,872 



11,490,384 



6, 516,6 IS 

 4,901,536 

 5,440,392 



1913 

 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 



2;_>2N,2-1 1 



826,500 



1,428,192 



2,962,176 



2.n56,:;m 



2,300,976 



740,544 



52.896 



52,896 



290,928 



978,576 



105,792 



158,6S8 



1,600 

 3,200 



30 

 22 



19 

 158 

 22 



28 



400 

 S00 

 000 

 800 

 800 

 400 

 200 



6NS 



400 



soo 



158, 



502, 



6SS 



512 

 400 

 600 



