1920] 



Allen: Plankton of the San Joaquin River 



217 



1913 



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 

 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 



Table 2. — Organisms Per Cubic Meter in Plankton of 

 San Joaqdin River in 1913— {Continued) 



Eunlotes Euplotes Holophrya Paramecium Paramecium 



harpa patella sp. aureUa bursana 



52,896 

 3,200 



Stentor 

 coeruleus 



Stentor 

 niger 



1,600 



1,600 



Tintinnidium 

 fluviatilt; 



Vorticella 

 longifilum 



1,600 



3,200 

 3,200 

 3,200 



3,200 



3,200 



6,400 

 3,200 

 3,200 



3,200 

 6,400 

 6,400 



3,200 



3,200 



1,600 

 3,200 



6,400 

 3,200 



Vorticella 

 sp. 



3,200 

 79,344 



132,240 



Prorodon 

 sp. 



Total 

 Ciliata 



800 



800 



4,800 



297,328 



9,600 



162,640 



148,240 



558,708 



110,. 592 



.529,712 



429,568 



.303,728 



213,184 



379,872 



216,.384 



249,232 



6,400 



373,472 



.532,160 



806,240 



1,017,824 

 267,680 

 105,792 

 4,800 

 211,.584 

 211,.584 



1,269,.504 

 846,336 



1.219,808 



1,481.088 



1,0.57,920 

 383,072 



2,115,840 

 317,376 



1,163,712 



3,200 



132,240 



163,712 

 9,52,128 

 846,336 

 634,752 

 634,752 

 342,976 

 5.54,.560 

 .330,176 

 4,87,168 

 121,792 



1,600 

 60,896 



9,600 

 137,040 



6,400 



