220 



University of California Publications in Zoology [Vol. 22 



Table 2. — Organisms Per Cubic Meter in Plankton op 

 San Joaquin River in 1913 — (Continued) 



1913 

 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 

 6/28 

 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 



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 



Anureaopsis Anureaopsis 



1,600 

 12,800 



16,000 



1,600 

 1,600 



1,600 



'.1,0(10 



3,200 

 6,400 

 3,200 

 6,400 



105,792 



3,200 



105,792 



25,600 

 38,400 



6,400 

 52,896 



1,600 



3,200 

 3,200 

 1,600 



Asplanchna Asplanchnopus Brachio 

 brightwellii sp. angula 



22,400 



12,800 

 12,800 



3,200 



3,200 

 1,600 



158,688 



.TJ.OOO 



12.800 



211,584 



25,600 

 211,584 

 105 792 

 105J92 



38,400 

 211,584 



12,800 

 6,400 



88,944 



188,336 



25,600 



16,000 



3,200 



6,400 



22,400 

 6,400 

 6,400 

 12,800 

 12,800 



3,200 

 3,200 

 3,200 

 4,800 



6,400 



174,688 



64,000 

 19,200 



224,384 



25,600 



224,384 



105,792 



156,992 



64,000 



330,176 



12,800 



19,200 



19,200 



12,800 



9,600 

 6,400 

 6,400 

 3,200 



Brachionus 

 angularis 

 caudatus 



400 

 400 



38,400 



6,400 

 105,792 



12,800 

 105,792 

 105,792 



12,800 



25,600 

 12,800 



6,400 

 3,200 



1,600 



Brachionus 

 budapestenensis 



6,400 

 6,400 



6,400 



6,400 

 9,600 



79,344 



Brachionus 

 calyciflorus 



800 



1,200 



1,200 



4,000 



1,600 



44,800 



132,240 



41,600 



6,400 



3,200 



19,200 



16,000 



16,000 



