1920] 



Allen: Plankton of the San Joaquin River 



239 



Table 3. — Organisms Per Cubic Meter in Plankton of 

 Smith's Canal in 1913 — (Continued) 



1913 



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 



6/16 



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 



Navicula 

 didyrna 



3,200 



Navicula 

 dubia 



1,600 



3,200 

 1,600 



1,600 



52,896 



6,400 



105,792 



52,896 

 3,200 



3,200 



52,896 

 105,792 



1,600 



Navicula 

 gracilis 



264,480 

 6,400 

 290,928 

 185,136 

 290,928 

 290,928 

 476,064 

 581,856 

 18.5,136 

 238,032 

 608,304 

 105,792 

 132,240 

 158,688 

 211,584 



317,376 



370,272 



79,344 



185,136 



1,600 



634,752 



105,792 



1,798,464 



740,544 



2,062,944 



49,722,240 



3,385,344 



2,644,800 



1,904,256 



423,168 



2,327,424 



1,375,296 



952,128 



1,163,712 



740,544 



317,376 



52,896 



158,688 



52,896 



185,136 



158,688 



370,272 



158,688 



185,136 



317,376 



Navicula 

 sp. 



79,344 



"105,792 

 82,544 

 3,200 

 1,600 

 1,600 

 4,800 

 6,400 

 1,600 

 3,200 



3,200 



3,200 

 6,400 



3,200 



3,200 

 6,400 



Nitzschia 

 acicularis 



Navicula 

 viridis 



12,800 132,240 



3,200 79,344 



1,600 158,688 



3,200 79,344 



105,792 



211,584 



1,600 343,824 



6,400 238,032 



3,200 264,480 



3,200 264,480 



476,064 



1,600 52,896 



105,792 



3,200 211,584 



3,200 185,136 



132,240 



3,200 211,.584 



3,200 846,336 



661,200 



1,005,024 



819,888 



3,200 608,304 



793,440 



12,800 687,648 



793,440 



12,800 634,752 



6,400 1.58,688 



6,400 423,168 



3,067,968 



3,385,344 



12,800 1,269,504 



528,960 



12,800 1,481,088 



25,600 528,960 



211,.5S4 



211,584 



105,792 



1.58,688 



6,400 317,376 



6,400 502,512 



9,600 211,584 



290,928 



52,896 502,512 



3,200 132,240 



79,344 



3,200 132,240 



1913 

 1/11 

 1/19 

 1/25 

 2/ 2 

 2/ 8 

 2/15 

 2/23 

 3/ 1 

 3/ 8 

 3/15 



Nitzschia 

 augularis 



9,600 



6,400 

 3,200 



"3,200 



Nitzschia 

 sigma 



1,600 



Nitzschia 

 sigmoidea 



1,600 



"9,606 

 79,344 



Nitzschia 

 vermicularis 



1,600 



3,200 

 52,896 

 105,792 

 9,600 

 3,200 

 1,600 

 6,400 



Pinnularia Pleurostauron 



acrosphaeria parvulum 



.39,672 



317,.376 



72,732 



264,480 



211,584 



9,600 158,688 



211, .584 



740,.544 



290,928 



476,064 



