1920] 



Allen: Plankton of the San Joaquin River 



169 



1913 



11/26 

 11/30 

 12/ 3 

 12/ 6 

 12/10 

 12/14 

 12/17 

 12/20 

 12/24 

 12/27 

 12/31 



Table 1. — Organisms Per Cubic Meter in Plankton of 

 Stockton Channel in 1913 — (Continued) 



Enchelys 

 sp. 



33,060 



Euplotes 

 harpa 



28,800 



52,S9(i 



9,600 



12,800 



800 



Euplotes 

 patella 



Frontonia 

 sp. 



Halteria 

 grandinella 



400 



800 



13,224 



Hastatella 



radians 



13,224 



400 

 13,224 



1913 



Holophrya 

 sp. 



Loxophyllum 

 sp. 



1/ 5 



1/ 8 



1/12 



1/15 



1/19 



1/22 



1/26 



1/29 



2/ 2 ■ 



2/ 5 



2/ 8 



2/12 39,672 



2/15 



2/19 



2/23 



2/26 3,200 



3/ 1 



3/ 5 1,600 



3/ 8 52,896 



3/12 581,856 



3/15 9,600 



3/19 238,032 



3/23 105,792 



3/26 132,240 



3/29 158,688 



4/ 2 290,928 



4/ 5 



4/ 9 211,,584 



4/13 3,200 



4/16 185,136 



4/19 79,344 



4/23 211,584 



4/26 105,792 



4/30 2 11, .584 



5/ 3 105,792 



5/ 7 132,240 



5/11 79,344 



5/14 105,792 



5/17 1,005,024 



5/21 105,792 



5/24 264,480 



5/27 



5/31 



6/ 3 



3,200 



Paramecium 

 aurelia 



1,200 

 26,448 

 26,448 

 79,344 

 72,732 



4,800 

 400 



3,200 



26,448 



119,016 



3,200 



1,600 



1,600 

 3i266 



3,200 



6,400 



Paramecium 

 bursaria 



400 

 400 

 800 



Paramecium 

 caudatum 



400 



Pleuronema 

 sp. 



400 



9,600 

 6,400 

 3,200 



1,600 

 3,200 



3,200 



