1920] 



Allen: Plankton of the San Joaquin Biver 



161 



Table 1. — Organisms Per Cubic Meter in Plankton op 

 Stockton Channel in 1913 — {Coiitinned) 



I9I3 



6/ 7 

 6/11 

 6/16 

 6/18 

 6/21 

 6/25 

 6/28 

 7/ 3 

 7/ 5 

 7/ 9 

 7/12 

 7/16 

 7/19 

 7/23 

 7/26 

 7/30 

 8/ 2 

 8/ 6 

 8/ 9 

 8/13 

 8/15 

 8/20 

 8/23 

 8/27 

 8/31 

 9/ 2 

 9/ 6 

 9/ 9 

 9/13 

 9/17 

 9/20 

 9/24 

 9/27 

 10/ 1 

 10/ 4 

 10/ 8 

 10/11 

 10/15 

 10/18 

 10/22 

 10/26 

 10/29 

 11/ 1 

 11/ 5 

 11/ 8 

 11/12 

 11/15 

 11/19 

 11/22 

 11/26 

 11/30 

 12/ 3 

 12/ 6 

 12/10 

 12/14 

 12/17 

 12/20 

 12/24 

 12/27 

 12/31 



Difflugia 

 corona 



6,400 



3,200 



Difflugia 

 pyriformis 



740,544 

 158,688 

 423,168 

 158,688 

 19,200 

 581,856 

 581,856 

 105,792 

 211,584 

 264,480 



3,200 

 264,480 



3,200 



3,200 

 3,200 



6,400 



105,792 



3,200 



800 



400 

 400 



Hyalodiseus 

 sp. 



Hyalosphenia 

 cuneata 



Hyalosphenia 

 papilio 



3,200 



3,200 

 3,200 



158,688 



105,792 



52,896 



634,752 



370,272 



52,896 



132,240 



158,688 



1,600 



1,600 



Microgromia 

 Bocialis 



3,200 

 3,200 



3,200 



3,200 



3,200 



105,792 



3,200 



'i65J9i2 

 3,200 



105,792 

 52,896 

 52,896 



"211^,584 



264,480 



211,584 



264,480 



52,896 



'2ni584 



52,896 



105,792 



1,600 



