1920] 



Allen: Plankton of the San Joaquin Ri 



211 



Table 2.— Organisms Per Cubic Meter in Plankton op 

 San Joaquin River in 1913— (Continued) 



5/24 



5/31 



6/ 7 



6/16 



6/21 



li 2S 



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 



211, 5S4 

 3,200 



1,600 



105J92 

 3,200 

 3,200 

 3,200 

 6,400 



105,792 

 105,792 



52,896 



10.5,792 

 211,584 

 105,792 



211,584 

 105,792 



211,584 



.YJS.'.Hill 



105,792 

 6,400 

 1,600 



79,344 



105,792 



3,200 



6,400 



105,792 



12,800 

 105,792 



6,400 



6,400 

 52,896 

 52,896 



3,200 

 6,400 



52,896 

 3,200 

 3,200 



105,792 



52,S96 

 52,896 



52,896 

 1,600 



1913 



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 

 4/ 5 

 4/13 

 4/19 

 4/26 

 5/ 3 

 5/10 

 5/17 

 5/24 

 5 31 

 6/ 7 

 6/16 

 6/21 



Pteromonas Trachelomonas Trachelomonas 

 sp- euchlora volgensis 



66,120 



1,600 

 52,896 



132,240 

 79,344 

 79,344 



132,240 

 52,896 

 79,344 

 52,896 



132,246 



52,896 



3,200 

 211,584 



3,200 



