204 



University of California Publications in Zoology [Vol.22 



Table 2. — Organisms Per Cubic Meter in Plankton of 

 San Joaquin River in 1913 — (Continued) 



1913 

 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 



105,792 

 105,792 



1,600 

 1,600 



12,800 

 6,400 



Gyrosigma 

 kutzingii 



105,792 

 105,792 

 211,584 



12,800 



105,792 



52,896 



6,400 

 1,600 

 79,344 

 3,200 

 1,600 



Gyrosigma 

 scalproides 



Melosira 

 granulata 



45,914,928 



73,852,864 



25,505,920 



12,483,456 



12,007,392 



4,178,784 



1,481,088 



3,041,520 



14,176,128 



2,142,288 



60S, 304 



846,336 



661,200 



Melosira 

 granulata A 



1913 (small) 



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 5,368,944 



4/ 5 1,600 



4/13 1,243,056 



4/19 290,928 



4/26 238,032 



5/ 3 52,896 



5/10 185,136 



5/17 



5/24 211,584 



5/31 634,752 



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 



Melo 



Navicula 

 alpestris 



52,896 



4,800 



39,672 



79,344 



79,344 



44,800 



185,136 



105,792 



15S.6SS 



105,792 



449,616 



264,480 



290,928 



343,824 



185,136 



528,960 



581,856 



502,512 



634,752 



1,163,712 



634,752 



1,216,608 



793,440 



317,376 



238,032 



449,616 



132,240 



238,032 



105,792 



158,688 



158,688 



158,688 



12,800 



105,792 



211J584 

 105,792 

 105,792 



211,584 



19,836 



1,600 

 1,600 

 105,792 

 6,400 

 1,600 



3,200 

 52,896 

 52,896 



3,200 

 79,344 



264,480 



79,344 



105,792 



52,896 



52,896 



1,600 



79,344 



79,344 



79,344 



IS.",, 136 



3,200 



264,480 



899,232 



317,376 



317,376 



3,200 



3,200 



52,896 



52,896 



3,200 



3,200 

 264,480 



317,376 



12,800 



105,792 



'211,584 



Navicula Navicula 



bacillum didyma 



3,200 



3,200 



52,896 



23x,032 52,896 



185,136 



185,136 



343,824 



793,440 



634,752 



1,005,024 



1,322,400 



581,856 



211,584 1,600 



79,344 1,600 



79,344 



52,896 



105,792 



105,792 'ZZ.'.'.'.'Z 



105,792 3,200 



158,688 



3,200 



105,792 211,584 



317,376 



740,544 



211,584 



105,792 



105,792 



211,584 



211,584 



317,376 



