1920] 



Allen: Plankton of the San Joaquin River 



181 



Table 1. — Organisms Per Cubic Meter in Plankton of 

 Stockton Channel in 1913 — {Continued) 



1913 



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/U 



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 



Brachionus 



angularis Brachionus 



caudatus budapestenensis 



423,168 



211,584 



105,792 



105,792 ;.... 



1,269,504 : 



1,428,192 



1,692,672 



899,232 



952,128 



317,376 



476,064 



476,064 



2,433,216 



2,062,944 



687,648 



19,200 



264,480 



740,544 



581,8.56 19,200 



581,856 6,400 



793,440 



423,168 52,896 



264,480 



158,688 6,400 



370,272 



19,200 



25,600 6,400 



6,400 



Brachionus 

 calyciflorus 



6,400 

 12,800 



6,400 

 6,400 



6,400 



6,400 



3,200 

 6,400 

 3,200 

 3,200 

 9,600 



800 



Brachionus 

 capsuliflorus 



6,400 



6,400 

 6,400 



6,400 



3,200 

 3,200 



12,800 

 6,400 



32,000 

 6,400 

 6,400 



32,000 



6,400 

 6,400 



Brachionus 



egg. attached 



female 



12,800 



2,644,480 



3,200 



158,688 



317,376 



687,648 



952,128 



740,544 



476,064 



105,792 



1.58,688 



317,.376 



1,269,504 



476,064 



370,272 



6,400 



105,792 



1,005,024 



370,272 



423,168 



634,752 



158,688 



158,688 



52,896 



211,584 



6,400 



9,600 

 12,800 

 19,200 

 105,792 

 79,344 

 16,000 



9,600 



1,600 

 800 



Brachionus 



egg, attached 



male 



105,792 



105,792 

 19,200 



52,896 

 ' 19,200 

 211,584 



9,600 

 12,800 



1,600 



1913 



1/ 5 

 1/ 8 

 1/12 

 1/15 

 1/19 

 1/22 

 1/26 

 1/29 

 2/ 2 

 2/ 5 



Brachionus 



egg. free 



female 



13,224 

 33,060 

 6,400 

 26,448 

 13,224 

 400 



19^836 



13,224 

 92,568 



Brachionus 



egg, free 



male 



Brachionus 

 male 



Brachionus 

 plicatilis 



1,600 



2,000 



5,200 



13,224 



26,448 



4, son 



26,448 

 52,896 

 92,568 

 99, ISO 



Brachionus 

 urceus 



6,612 

 400 

 800 

 400 



1,600 



400 



17,600 



59,.50S 



52,896 



Brachionus 



with 



endoparasites 



