1920] 



Allen: Plankton of the San Joaquin River 



233 



Table 3. — Organisms Pek Cubic Meter in Plankton of 

 Smith's Canal in 1913 — {Continued) 



1913 



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 

 11/1.5 

 11/22 

 11/30 

 12/ 6 

 12/14 

 12/20 

 12/27 



1/11 

 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 

 6/31 

 6/ 7 

 6/16 

 6/21 

 6/28 

 7/ 5 

 7/12 

 7/19 

 7/26 

 8/ 2 



Pediastrum 

 simplex 



1,600 



52,896 



32,000 



6,400 



105,792 



105,792 



105,792 



158,688 



105,792 



528,960 



12,800 



211,584 



25,600 



12,800 



211,584 



12,866 

 6,400 



3,200 

 1,600 



1,600 



Total 

 Chlorophyceae 



1,200 

 9,600 



14,000 

 100,144 



48,000 

 237,936 

 257,984 

 129,792 

 302,128 

 280,480 

 388,864 

 795.040 

 431,168 

 174,688 

 316,528 

 479,264 

 389,472 

 125,744 



27,200 



19,200 



118,592 



180,240 



116,992 



211.584 



746,944 



597,856 



1,644,576 



2,593,408 



2,577,408 



2,548,508 



Raphidium 

 polymorph um 



Richteriella 

 botryoides 



1,600 

 1,600 

 3,200 

 3,200 

 3,200 

 3,200 



370,272 

 317,376 



"211,584 



224,384 

 211,. 584 

 105,792 



""52,896 



52,896 



211,584 



1.32,240 



1,600 



79,344 



1,600 



132,240 



Asterionella 

 gracillima 



773,604 



6,083,040 



3,1.53,924 



5,183,808 



9,997,344 



2,062,944 



2,644,800 



1,666,224 



1,481,088 



1.295,952 



1,137,264 



3,702,720 



211, .584 



793,440 



343,824 



581,856 



28,800 



3,623,376 



608.304 



185,1.36 



105,792 



819,888 



2,353,872 



3,067,968 



899,232 



238,032 



105,792 



952,128 



25,600 



317,376 



Asterionella 



gracillima 



(large) 



1,600 

 1,600 



26,448 



79,344 

 158,688 



132,240 



52,896 



105,792 



502 512 



1,031,472 



2,803,488 



3,120,864 



502,512 



i,606 



Scenedesmus 

 obliquus 



3,200 

 3,200 

 3,200 



"i05,792 



3,206 



"158^688 



12,800 



423,168 



211,584 



105,792 



423,168 



105,792 



423,168 



211,584 



317,376 



211,584 



158,688 



105,792 



3,200 



1,600 



3,200 



1,600 



Amphiprora 

 alata 



1,600 



132,240 



3,206 



1,600 



238.032 



1,600 



52,896 



3,200 



1,600 



1,600 



105,792 



Scenedesmus 

 quadricauda 



264,480 



105,792 



290,928 



158,688 



317,376 



476,064 



370,272 



899,232 



528,960 



846,336 



1,163,712 



528,960 



846,336 



1,269,. 504 



2,115,3*0 



1,692,672 



846,336 



1,110,816 



1,216,608 



846,336 



687,648 



290,928 



158,688 



6,400 



3,200 



1,600 



52,896 



Amphora 

 coffaeformis 



Schroederia 

 setigera 



3,200 



211,584 

 52,896 



1,600 



Bacillaria 

 paradoxa 



2,000 

 4,800 



4,806 



6,466 



3,206 



3,200 



25,600 



6,400 



132,240 



158,688 



105,792 



132,240 



185,136 



41,600 



9,600 



12,800 



3,200 



16^666 



12 800 



6,400 



38,400 



12.800 



1,428,192 



1,904,256 



5,183,808 



4,760,640 



