1920] 



Allen: Plankton of the San Joaquin River 



207 



Table 2. — Organisms Per Cubic Meter in Plankton of 

 San Joaquin River in 1913 — (Continued) 



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 



4/19 



4/26 



5/ 3 



5/10 



5/17 



5/24 



5/31 



6/ 7 



6/1 6 



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 



400 

 400 



3,200 



3,200 



3,200 



211,584 



12,800 



6,400 

 3,200 



3,200 

 3,200 



12, SOU 



12,800 

 6,400 



3,200 



Surirella 

 sp. 



800 



400 



34,260 



73,108 



120,192 



83,200 



lis, 11 id 



67,200 



264,481) 



211,584 



264,480 



211,584 



264,480 



555,408 



ls,-,,i::ii 



555,408 



211,584 



1,084,368 



97S.576 



1,79S,464 



634,752 



793,440 



1,428,192 



793,44 ) 



290.92S 



528,960 



l.",s,c,ss 



581,856 



423,168 



952, 12S 



2,539,008 



4,707,744 



1,745,568 



2,010,048 



2,327,424 



1,269,504 



1,481, OSS 



846,336 



1,163,712 



925,128 



1,269,504 



634,752 



1,163,712 



423,168 



952,128 



83,200 



423,168 



317,376 



185,136 



2:{N,032 



264,480 



528,961) 



476,064 



370,272 



370,272 



11 15, 7(12 



370,272 



476,064 



1,057,920 



1,057,920 



211,584 



317,376 



317,376 



423,168 



634,752 



105,792 



317,376 



423,168 



52,896 



52,896 



185,136 



1,600 



132.210 



52,896 



1,600 



125,6 8 

 59,508 

 469,452 

 178,524 

 290.92S 

 264,480 

 238,032 

 264,480 

 185,136 

 370,272 

 581,856 

 290,928 

 370,272 

 661,201) 

 687,648 

 502,512 

 211,584 

 502,512 

 819,888 

 899,232 

 740,544 

 687,648 

 6,s7,61S 

 423,168 

 211,584 

 290,928 

 79,344 



15.S.6.SS 



105,792 



211,584 



317,376 



317,376 



105,792 



211,584 



4,866,432 



2,750,592 



o. 163,312 



1,904,256 



1,269,504 



2,433,216 



2,327,424 



846,336 



634,752 



476,064 



158,688 



105,792 



158,688 



15S.6SS 



317,376 



1S5.136 



132,240 



264,480 



400 5,809,536 



2,251,768 



10,974,996 



2,663,576 



11,996,848 



12,933,536 



5,016,736 



6,856,748 



13,325,744 



11,019,120 



10,801,04) 



9,134,064 



14,115,040 



5,260,608 



8,892,336 



14,298,672 



11,305,248 



7,678,572 



10,505,408 



16,196.288 



11,764,928 



21,702,976 



22,407,344 



16,107,296 



19,785,264 



6,400 29,834,352 



14,174,332 



25,030,060 



3,200 43,575,008 



44,644,352 



102,741,536 



90,369,664 



90,117,192 



193,347,650 



178,086,636 



211,605,800 



132,958,752 



123,920,832 



74,461,376 



72,648,572 



132,110,672 



71,980,864 



47,266,700 



22,9S0,768 



10,205,536 



5,766,976 



6,451,616 



18,058,240 



11,466,384 



6,252,552 



4,821,440 



5,190,960 



3,200 



1913 



1/ 5 

 1/12 

 1/19 

 1/25 

 2/ 2 



1,600 



1,600 



S00 



Spirogyra 

 protect a 



