1920] 



Allen: Plankton of the San Joaquin River 



281 



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

 "Hourly Series in 1913 — (Concluded) 



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.: 



52,896 

 52,896 



52,896 

 6,400 



6,400 

 6,400 



Prichocerca 

 capucina 



52.S96 



12,800 



Trichocerca 

 iernis 



158,688 

 158,688 

 :;t:;,s2J 

 264,480 

 714,096 

 766,992 

 343.S24 

 211,584 

 211,584 

 32,000 

 25,600 

 211,584 

 264,480 



Total 

 Ploima 



4,564,560 

 7,466,640 

 4.S46.3S4 

 7,199,408 

 5,759,920 

 9,612,576 

 4,979,936 

 4,817,607 

 3,575,840 

 2,721,600 

 3,512,752 

 5,471,152 

 6,199,188 



Total 

 Rotifera 



4,729,648 

 7,615,328 

 5,196,608 

 7,410,992 

 6,268,832 

 9,956,400 

 5,145,024 

 5,180,631 

 3,704,432 

 2,852,992 

 3,631,344 

 5,708,336 

 7,357,876 



longirostris 



52,896 



52.N96 



52,S96 



6,400 

 6,400 



6,400 



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 



Sida 



52,896 

 12,800 

 12,800 

 25,600 

 6,401 

 19,200 



19,200 

 52,896 

 52,896 



m. 6,400 



m. 12,800 



105,792 



12,800 



65,696 



25,600 



6,400 



19,200 



52,896 



19,200 



52,896 



52,896 



6,400 



6,400 



19,200 



Cyclops 

 15S.6SS 

 86,400 

 86,400 

 54,400 

 73,600 

 54,400 

 25,600 



SO, 1 100 



60,800 

 60,800 

 99,200 

 99,200 

 140,800 



NaupHus 

 15K.6S.S 

 l.-,S,liSS 

 105,792 

 15S.6SS 

 80,000 

 211,584 

 86,400 

 92,800 

 12,800 

 52,S96 

 105,792 

 52.S90 

 105,792 



Total 

 Copepoda 



317,376 

 245,088 

 192,192 

 213,088 

 153,600 

 265,984 

 112,000 

 172,800 

 73,600 

 113,696 

 204,992 

 152,096 

 246,592 



123,16s 

 257,888 

 257,888 

 23S.CSS 



100,000 



285,184 

 164,896 

 192,000 

 126,496 

 172,992 

 211,584 

 158,496 

 265,792 



Total 

 Organisms 



42,893,610 

 37,825,610 



32,689,892 

 3S,192,S80 

 34,967,488 

 41,414,752 

 38,087,152 

 51,429,463 

 54,374,720 

 56,092,520 

 72,902,032 

 69,619,120 

 85,531,500 



