1920] 



Allen: Plankton of the San Joaquin River 



275 



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

 Hourly Series in 1913 



1913 

 8/11 



7 A.M. 



8 A.M. 



9 A.M. 

 10 A.M. 

 1 1 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. 6,400 



52,896 



52,896 



( 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 J 



8/11 f 



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 1 



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 



6:41) p.m. 



Glococapsa Go 

 sp. 



343,824 



343,824 



264,480 



343,824 



343,824 



158,688 



766,992 



661,200 



608,304 



608,304 



925,680 

 . 714,096 

 . 925,680 



211,584 

 158,688 

 158,688 



52,896 

 264,480 

 264,480 

 343.S24 

 211,584 

 264,480 

 264,480 



12,800 



52,896 



19,200 



12,800 



10.5,792 



158,688 



105,792 



6,400 



52,896 



52,896 



uphosphaer 

 aponina 

 52.S96 



158.6S8 

 158,688 



52,896 



6,400 

 52,896 



Pediastrum 

 duplex 



449,616 



766,992 



396,720 



449,616 



0111,200 



608,304 



1,216,608 



1.103.712 



1,110,816 



925.680 



1,5 13,984 



1 481,088 



1 216,608 



396,720 

 419,616 

 449,616 

 502,512 



1,163,712 

 1,719,120 

 1,666,224 

 3,861,408 

 3,967,200 

 5,236,704 



Microcystis 



sp. 



211,584 

 343,824 

 449.010 

 158,688 

 105,792 

 661,200 

 264,480 

 343,824 

 343,824 

 396,720 

 502,512 

 502,512 

 449,616 



Total 

 Schizophyceae 



1,454,644 

 1,461,040 

 984,976 

 1,454,640 

 1,533,984 

 2,545,408 

 2,115,S40 

 5,871,456 

 8,096,640 

 8,701,394 



10,083,088 

 8,542,704 



12,040,250 



Pediastrum 



a >lex 



6,400 

 52,896 



105.792 



158,688 



52,896 



6, till) 



,8i it; 



sp. 

 264,480 

 158,688 

 0,400 



52,896 

 211,584 

 343,824 

 158 688 

 105,792 

 502,512 

 21 1,584 

 158,688 

 105,792 

 158,688 



211,584 



52,896 



52,896 



396 720 



105,792 



459,616 



52,896 



3,120,864 



4,522,608 



5.1 t8,288 



3,914,304 



2,697,696 



3,306,000 



52,896 

 6,400 

 52.S96 

 52,896 

 52,896 

 52,896 



52.S96 

 6,400 



Raphidium 

 polymorphurr 



52. 810 



1 1 800 



105,792 

 52,896 



6,400 



52,890 



52,896 



158,688 



449,616 

 502,512 

 264,480 



Actinastrum 



hantzschii 



(large) 



105,792 

 158.68S 

 264,480 

 343,824 

 502,512 

 211,584 

 449,616 

 343,824 

 661,200 

 264,480 

 396,720 

 502,512 

 608,304 



Raphidium 

 pyrenogerum 



52,896 



( ;luroi-aps:i 



conglomerata 



52,896 



6,400 



105.792 

 52,896 



6,400 



105,792 

 52,890 



52,896 



52,890 



105,792 

 52,896 



Coelastrum 



niicroporum 



105,792 

 105,792 

 105,792 



52,S96 

 105,792 

 158,688 



52,896 

 6,400 



19,200 

 158,688 



52,896 

 211,584 

 264,4,80 



SrfTn>il<'.sniU:s 



obliquua 

 52.S96 



264, I si i 

 52,896 



211,584 

 52,896 



52,896 



341,821 

 343,824 

 211.581 

 264,480 

 158,688 



158,688 



