1920] 



Allen: Plankton of the San Joaquin River 



273 



Table 4. — Plankton Organisms Per Cubic Meter in Stockton Channel, 

 Daily Series in 1913 — (Continued) 



Keratella 



1913 egg, free 



7/10 317,376 



7/11 370,272 



7/12 687,648 



7/13 



7/14 3,200 



7/15 



7/16 



7/17 211,584 



7/18 105,792 



7/19 105,792 



7/20 105,792 



7/21 158.688 



7/22 211,584 



7/23 



7/24 105,792 



7/25 3,200 



7/26 



7/27 158,688 



7/28 3,200 



7/29 3,200 



7/30 3,200 



7/31 105,792 



8/ 1 



8/ 2 105,792 



8/ 3 



8/ 4 



7/ 5 

 7/ 6 

 7/ 7 

 7/ 8 

 7/ 9 

 7/10 

 7/11 

 7/12 

 7/13 

 7/14 

 7/15 

 7/16 

 7/17 

 7/18 

 7/19 

 7/20 

 7/21 

 7/22 

 7/23 

 7/24 

 7/25 

 7/26 

 7/27 

 7/28 

 7/29 

 7/30 

 7/31 

 8/ 1 

 8/ 2 

 8/ 3 

 8/ 4 



Trichocerca 

 19,200 



19,200 

 |5S,(iSS 

 317,376 

 211,584 

 370,272 

 476,064 

 317,376 

 264,480 

 105,792 



6.400 

 3,200 

 6,400 

 6,400 

 12.800 

 158,688 

 6,400 



158,688 



12,800 



3,200 



6,400 



6,400 



19.200 



25,600 



25,600 



19,200 



12,800 



6,400 



Keratella 

 quadrata 



528,960 



687,648 

 1,322.4(1(1 

 1,110,816 

 1,057,(12(1 

 1,110,816 



952,128 



687,648 

 1,322,400 



846,336 

 1,057,920 



846,336 

 1,110,816 

 1,692,672 

 1,163,712 

 2,010,048 

 2,062,944 

 5,554,080 

 2,644,800 

 4,601,952 

 2,010,048 

 2,856,384 

 2,909,280 

 1,110,816 



423,168 

 1,057,920 



Total 

 Ploima 



7,111,968 

 3,229,664 

 3,590,336 

 5,921,656 

 5,127,720 

 6,445,024 

 6,884,384 

 8,578,056 

 6,113,344 

 5,940,352 

 4,252,384 

 4,348,576 

 3,419,552 

 5,557,088 

 3,390,048 

 3,373,856 

 3,5S8,S32 

 4,966,136 

 3,428,256 

 3,010,176 

 6,069,000 

 5,972,352 

 15,098,656 

 7,241,956 

 8,434,368 

 4,255,784 

 5,384,096 

 5,816,864 

 3,639,032 

 1,958,656 



2, S.V.I. (INS 



Polvarthra 

 trigla 



1, 745.56S 

 1,798,464 



1,692,672 



1,904,256 



1,163,712 



370,272 



687,648 



38,400 



76,800 



158,688 



89,600 



15s,(iss 



101,400 



134,400 



211,584 



476,064 



634 752 



1,216,608 



581,856 



846,336 



952,128 



Mii,:;;;i; 



793,440 



793,440 



264, 4S0 



264,480 



Total 

 Rotifera 



7,289,956 

 3,466,848 

 3,606,336 

 5,940,856 

 5,137,320 

 6,470,624 

 6,900,384 

 S,792.S40 

 6,309,432 

 6,367,720 

 4,261,984 

 4,386,976 

 4,001,408 

 5,566,688 

 3,548,736 

 3,383,456 

 3,608,032 

 4,988,536 

 3,745,632 

 3,125,568 

 6,181,192 

 6,010,752 

 15,230,048 

 7,453,440 

 8,540,160 

 4,271,784 

 5,403,296 

 5,978,752 

 3,680,632 

 2,133,344 

 2,971,280 



Polyarthra 

 trigla egg, 



attached 



3,200 



3,200 

 3,200 



3,200 

 6,400 



6,400 



12,800 

 12,800 



3,200 



3,200 

 6,400 



6,400 

 6,400 



12,800 

 6,400 

 3,200 



6,400 

 6,400 



6,400 



6,400 



32,000 



6,400 



6,400 

 12,800 



6,400 

 12,800 



6,400 



6,400 

 12,800 

 12.S00 



12,800 



12,800 

 6,400 

 6,400 

 6,400 



6,400 

 6,400 



Trichocerca 

 capucina 



3,200 



3,200 



6,400 



32,000 



6,400 



6,400 

 12,800 



6,400 

 12,800 



6,400 



12,800 

 12,800 



12,800 

 12,800 



"25,600 



12,800 

 6,400 

 6,400 

 6,400 



6,400 



12,800 

 6,400 

 6,400 



