1-920] Allen: Pl^inkton of the San Jo-aquin River 157 



Table 1. — Organisms Per Cubic Meter in Plankton of 

 Stockton Channel in 1913 — (Continued) 



Platydorina Pleodorina Pteromonas Spondylomorum Synura Trachelomonas 



1913 caudata californica sp. quarternarium uvella euchlora 



3/23 52,896 



3/26 52,896 



3/29 1,600 



4/ 2 1,600 



4/ 5 1,600 



4/9 



4/13 



4/16 105,792 



4/19 3,200 1,600 



4/23 476,064 



4/26 52,896 



4/30 ■. 1,600 



5/ 3 105,792 



5/ 7 



5/11 



5/14 3,200 



5/17 



5/21 



5/24 158,688 



5/27 



5/31 7Z''ZZ 



6/ 3 158,688 



6/ 7 



6/11 



6/16 3,200 



6/18 ; 158,688 



6/21 158,688 3,200 



6/25 3200 



6/28 



7/3 



7/ 5 158,688 



7/9 32,000 



7/12 



7/16 , 



7/19 



7/23 :.. . 



7/26 105,792 



7/30 



8/ 2 6,400 6,400 3,i200 3,200 



8/ 6 6,400 3,200 



8/ 9 3,200 



8/13 6,400 6,400 105,792 3,200 



8/15 3,200 



8/20 158,688 



8/23 3,200 264,480 



8/27 



8/31 



9/ 2 12,800 6,400 '..'. 



9/ 6 



9/ 9 6,400 105,792 



9/13 : 



9/17 3,200 



9/20 211,584 158,688 



9/24 



9/27 



10/ 1 



10/ 4 6,400 



10/ 8 52,896 ...; 52,896 



10/11 52,896 



10/15 



