1920] 



Allen: Plankton of the San Joaquin River 



241 



Table 3. 



-Organisms Per Cubic Meter in Plankton of 

 Smith's Canal in 1913 — (Continued) 



1913 



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 



Stauroneis 

 phoenicenteron 



1,600 

 3,200 



52,806 



Surirella 

 sp. 



54,400 

 35,200 

 105,792 

 158,688 

 60.S00 



132,240 



79,344 



211,584 



105,792 



132,240 



449,616 



211,584 



1,428,192 



687,648 



4,125,888 



1,586,880 



2,274,528 



1,163,712 



634,752 



211,584 



634,752 



528,960 



423,168 



317,376 



740,544 



634,752 



476,064 



;>2s.!llil> 



52,896 



185,136 



158,688 



264,480 



105,792 



264,480 



79,344 



105,792 

 793,440 



264, 4S0 



158,688 



476,064 



1,057,920 



528,960 



423,168 



423,168 



317,376 



1,586,880 



].-Vi.:,iu 



846,336 



634,752 



158,688 



15S,688 



264,480 



211,584 



52,896 



52,896 



132,240 

 1,600 



Synedra Total Closterium 



ulna Bacillariaceae acerosum 



185,136 14,915,728 6,400 



6,400 6,323,232 



317,376 8,531,408 



185,136 8,256,480 



105,792 5,198,768 



1,600 2,285,728 



132,240 8,722,096 



238,032 14,880,432 



238,032 17,599,024 3,200 



1,190,160 22,537,552 



343,824 15,092,112 



343,824 26,131,376 6,400 



158,688 24,800,128 



267,6S0 43,673,600 12,800 



211,584 53,S16,832 6,400 

 95,438,688 37,400 



370,272 149,512,496 



158,688 113,258,240 12,800 



4,125,888 11S.400,818 38,400 



3,808,512 220,996,096 70,800 



5,924,364 96,437,784 12,800 



2,856,384 157,322,752 25,600 



2,539,008 99,961,216 



1,904,256 84,452,672 



2,221,632 89,303,502 12,800 



1,692,672 57,291,968 



476,064 64,325,240 12,800 



370,272 30,671,584 6,400 



528,960 15,042,976 



158,688 6,757,696 3,200 



79,344 6,35 ,424 6,400 



132,240 7,324,400 3,200 



290,928 13,506,832 3,200 



238,032 7,003,072 3,200 



105,792 3,890,112 



185,136 4,581,056 



1913 



1/H 

 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 



1,600 



1,600 



1,600 

 400 



1,600 



1,600 

 1,600 



3,200 



Spirogyra 

 protecta 



1,200 

 6,400 



1,600 



3,200 

 6, kmi 



1,600 



1,600 

 79,344 



I85,i::ii 

 6,400 



1,600 



