1920] 



Allen: Plo/iikton of the San Joaquin River 



197 



Table 2. — Organisms Per Cubic Meter in Plankton of 



1913 



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 



6/16 



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 



Gomphosphaera 

 aponina 



1,600 



3,200 



52,896 



3,200 



3,200 



105,792 



3,200 



3,200 



211,584 

 25,600 



52,896 



San Joaquin River in 1913 — {Continued) 



Inactis 



tinetoria Merismopedium Microcystis Nostoc 



Agardh glaucum sp. sp. 



211,584 

 • 634,752 



1,692,672 

 2,115,840 

 1,269,504 

 2,115,840 

 2,327,424 

 634,752 

 105,792 



105,792 

 165,792 



105,792 



52,896 

 1,600 



1,600 

 52,896 



52,896 



290,928 

 476,064 

 105,792 

 158,688 

 211,,584 

 3,200 

 105,792 



740,.544 

 317,376 

 105,792 

 317,376 



211^584 



105,792 



6,400 



6400 



1,600 

 1,600 



52,896 

 '3,200 



52,896 



3,200 



158,688 



583,456 



3,808,512 



581,856 



952,128 



793,440 



1,114,010 



4,178,784 



541,760 



317,376 



740,544 



740,544 



317,376 



528,960 



12,800 



12,800 



12,800 



158,688 



Oscillatoria 

 formosa 



1,600 



3,200 

 3,200 



105,792 



"423,168 

 211,584 



"423468 

 528,960 



79,344 

 211,584 



52,896 

 1,600 



6,400 

 6,400 

 6,400 



25,600 

 12,800 



i05i7'92 



l65,"792 



6,400 

 1,600 



i^ebo 



1^600 



1,600 



1913 



1/ 5 

 1/12 

 1/19 

 1/25 

 2/ 2 

 2/ 8 

 2/15 

 2/23 

 3/ 1 

 3/ 8 



Oscillatoria 

 sp. 



Oscillatoria 

 tenuis 



Phormidium 

 spp. 



400 



52,896 

 52,896 



Stigonema 

 sp. 



Total 

 Schizophyceae 



20,236 

 400 



27,248 



3,200 



3,200 



52,896 



52,896 



108,992 



Actinastrum 

 hantzschii 



800 



1,600 

 52i896 



