1920] Allen: Plankton of the San Joaquin River 247 



Table 3. — Organisms Per Cubic Meter in Plankton of 

 Smith's Canal in 1913 — (Continued) 



Synura Trachelomonas Trachelomonas Trachelomonas Volvox Total 



1913 uvella euchlora volgensis volvocina globator Mastigophora 



11/22 211,584 9,051,520 



11/30 1,600 185,136 3,946,304 



12/ 6 1,600 1,600 132,240 3,200 2,713,696 



12/14 52,896 2,872,768 



12/20 1,600 52,896 2,320,400 



12/27 3,200 132,240 2,627,952 



Amoeba Amoeba ArccUa Cyphoderia Difflugia DifSugia 



1913 proteus radiosa vulgaris ampulla corona globulosa 



1/11 



1/19 3,200 ;.. 



1/25 



2/ 2 ; .;■■; ;■" 



2/ 8 



2/15 'ZZZ2 'Z'""''''''. ZZZZ MOO 'ZZZZ 



2/23 



3/ 1 ;.::;.::::; ::::::::::.:::: 



3/ 8 1,600 



3/15 3,200 3,200 



3/23 



3/29 



4/ 5 3,200 



4/13 



4/19 



4/26 3,200 



5/ 3 



5/10 



5/17 



5/24 



5/31 1,600 



6/ 7 



6/16 



6/21 



6/28 12,800- 



7/ 5 ;..;. 



7/12 1,600 6,400 



7/19 



7/26 105,792 6,400 



8/ 2 3,200 



8/ 9 6,400 



8/15 



8/23 12,800 3,200 6,400 



8/31 12,800 



9/ 6 12,800 105,792 



9/13 



9/20 423,168 



9/27 12,800 



10/ 4 



10/11 105,792 



10/18 105,792 



10/26 52,896 52,896 



11/ 1 52,896 52,896 



11/ 8 6,400 



11/15 



11/22 



11/30 



12/ 6 - 



12/14 



12/20 



12/27 52,896 



