1920] 



Alien: Plankton of the San Joaquin River 



273 



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

 Daily Series in 1913 — {Continued) 



Polyartlira 



Polyarthra trigla egg. 



trigla attached 



1,745,568 



1,798,464 



1,692,672 3,200 



1,904,256 



1,163,712 



370,272 



687,648 



38,400 



76,800 



158,688 



89,600 



158,688 



101,400 



134,400 



211,584 



476,064 



634,752 



1,216,608 3,200 



581,8,56 



846,336 3,200 



952,128 



846,336 



793,440 



793,440 3,200 



264,480 6,400 



264,480 



Total Bosmina 



Rotifera longirostris 



7,289,956 



3,466,848 



3,606,336 



5,940,856 



.5,137,320 



6,470.624 



6,900,384 



8.792,.S40 



6,309,432 



6,367,720 



4,261,984 . . 



4,-386,976 



4,001,408 6,400 



5,566,688 



3,.548,736 



3,383,456 12,800 



3,608,032 



4,988,.536 12,800 



3,745,632 



3,12.5,.568 



6,181,192 



6,010,752 



1.5,230,048 



7,453,440 



8,.540,160 



4,271,784 6,400 



5,403,296 



.5 978 7.52 



3!680i632 6^400 



2,133,-344 6,400 



2,971,280 



