1920] 



Allen: Plankton of the San Joaquin River 



279 



Table 5. — Plankton Organisms Per Cubic Meter in Smith's Canal, 

 Hourly Series in 1913 — (Continued) 



1913 

 8/11 



7 A.M. 



8 A.M. 



9 A.M. 



10 A.M. 



11 A.M. 



12 M. 



1 P.M. 



2 P.M. 



3 P.M. 



4 P.M. 



5 P.M. 



5:48 p.m. 

 6:40 P.M. 



1913 



8/11 



7 A.M. 



8 A.M. 



9 A.M. 



10 A.M. 



11 A.M. 



12 m. 



1 P.M. 



2 P.M. 



3 P.M. 



4 P.M. 



5 P.M. 



5:48 p.m. 

 6:40 p.m. 



Raphidiophrys 

 elegans 



105,792 



52,896 

 105,792 



Vorticella 

 B 



819,888 

 555,408 

 661,200 

 1,586,880 

 819,888 

 396,720 

 158,688 

 158,688 

 211,584 

 396,720 

 343,824 



1913 

 8/11 



7 A.M. 



8 A.M. 



9 A.M. 



10 A.M. 



11 A.M. 



12 M. 



1 P.M. 



2 P.M. 



3 P.M. 



4 P.M. 



5 P.M. 



5:48 p. 

 6:40 p. 



1913 

 8/11 



7 A.M. 



8 A.M. 



9 A.M. 



10 A.M. 



11 A.M. 



12 M. 



1 P.M. 



2 P.M. 



3 P.M. 



4 P.M. 



5 P.M. 



5:48 p. 

 6:40 P. 



Total Protozoa 



with 

 Mastigophora 



5,744,768 



8,892,090 



7,678,272 



9,476,288 



8,198,880 



11,214,560 



6,363,976 



6,332,176 



7,749,920 



6,594,656 



7,455,744 



M. 7,055,872 



M. 9,058,136 



Rotifer 

 unidenti6ed 



158,688 

 158,688 

 343,824 

 158,688 

 502,512 

 343,824 

 158,688 

 343,824 

 52,896 

 105,792 

 105,792 

 211,584 

 158,688 



Total 

 Heliozoa 



211,584 

 211,584 

 105,792 



"i58i688 



105,792 



158,688 



396,720 



1,005,021 



1,005,024 



1,322,400 



502,512 



555,408 



Vorticella 

 sp. 



1,322,400 



3,411,792 

 1,533,984 

 2,591,904 

 2,089,392 

 2,43.3,216 

 1,930,704 

 2,036,496 

 1,772,016 

 1,428,192 

 925,680 

 1,216,608 

 1,375,296 



Collotheca 

 pelagica 



12,800 



""eiiob 



Total 

 Bdelloida 



165,088 

 158,688 

 343,824 

 158,688 

 508,912 

 343,824 

 165,088 

 363,024 

 122,192 

 105,792 

 112,192 

 224,384 

 158,688 



Cyclidiura 

 sp. 



105,792 



"52,896 

 52,896 



105,792 



Total 

 Cilia ta 



1,692,672 

 4,57.5,514 

 2,750,592 

 5,031,520 

 4,178,784 

 5,501,184 

 3,180,160 

 2,935,728 

 2,829,936 

 1,745,568 

 1,487,488 

 1,639,776 

 3,226,656 



Collotheca 

 sp. 



6,400 



6,400 



6,400 

 6,400 



Anureaopsis 

 fissa 



52,896 

 105,792 

 105,792 



105,792 



52,896 



52,896 



6,400 



19,200 



19,200 



6,400 

 105,792 



Anureaopsis 

 sp. 



52,896 



52,896 

 105,792 

 52,896 

 32,000 

 52,896 



6,400 

 52,896 



12,800 



118,592 



6,400 



12,800 



Asplanchna 

 brightwellii 



6,400 



6,400 

 6,400 

 6,400 

 6,400 



6,400 



6,400 



6,400 



6,400 

 19,200 

 52,890 



6,400 

 12,800 



Asplanchnopus 

 sp. 



105,792 



105,792 



19,200 

 6,400 



'19^200 

 52,896 



