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. 



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/n 



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. 



1913 

 8/U 



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. 



^■AS p. 

 6:40 P. 



Lamprocystis 

 sp. 



52,896 

 52,896 



6,400 



Glococapsa 

 sp. 



343,824 

 343,824 

 264,480 

 343,824 

 343,824 

 1.58,688 

 766,992 

 661,200 

 608,304 

 608,304 

 925,680 

 , 714,096 

 . 925,680 



Phormidium 

 foveolarum 



211,584 

 158,688 

 158,688 



52,896 



264,480 

 264,480 

 343,824 

 211, .584 

 264,480 

 264,480 



Pediastrum 

 boryanum 



12,800 



12,800 



52,896 



19,200 



12,800 



105,792 



1.58,688 



105,792 



6,400 



Total 

 Bacteriaceae 



52,896 

 52,896 



6,400 



Gomphosphaera 

 aponina 



52,896 



1.58,688 

 158,688 



105,792 



Stigonenia 

 ocellatuni 



52,896 



52,896 



6,400 

 52,896 



Peiiastrum 

 duplex 



449,616 



766,992 



396,720 



449,616 



661,200 



608,304 



1,216,608 



1,163,712 



1,110,816 



92.5.680 



l..-vV\OSl 



1.4^1,0«S 



1210,608 



Anabaena 

 sp. 



105,792 



343,824 



52,896 



396,720 



449,616 



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 

 449,616 

 158,688 

 105,792 

 661,200 

 264,480 

 343,824 

 343,824 

 396,720 

 502,512 

 502,512 

 449,616 



Total 

 Schizophyceae 



1,4.54,644 

 1,461,040 

 984,976 

 1,454,640 

 1,533,984 

 2,.54.5,408 

 2,115,840 

 5,871,4.56 

 8,096,640 

 8,701, ,394 



10,083,088 

 8,542,704 



12,040,250 



Pediastrum 

 simplex 



6,400 

 52,896 



105,792 



158,688 



52,896 



6,400 



52,896 



105,792 



52.896 



12,800 



2.5,600 



6,400 



Aphanocapsa 

 sp. 



264,480 

 1.58,688 

 6,400 

 52,896 

 211,584 

 343,824 

 1.58,688 

 105,792 

 502,512 

 211, .584 

 1,58,688 

 105,792 

 1.58,688 



Nostoc 

 sp. 



2 11,. 584 



52,896 



.52.896 



.396,720 



105,792 



4.59,616 



52,896 



3,120,864 



4,522,608 



5,448,288 



3,914,304 



2,697,696 



3,306,000 



Actinastrum 

 hantzschii 



52,890 

 6,400 

 52.896 

 52,896 

 52,896 

 52,896 



105,792 



52,896 



6,400 



.52,898 



Coelosphaerium 

 kiitzingianum 



52,896 

 6,400 



Raphidiuni 

 polymorphum 



52,896 



52,896 



Oscillatoria 

 sp. 



158,688 



449,616 

 .502,512 

 264,480 



.Actinastrum 



hantzschii 



(large) 



105,792 

 1.5,8.688 

 264.4X0 

 343,824 

 502.512 

 211, .584 

 449,616 

 .343,824 

 661,200 

 264,4.S0 

 .390,720 

 502,512 

 608,304 



Raphidiuni 

 pyrenogerum 



52,896 



105,792 



Gloeocapsa 

 conglomerata 



52,896 

 6,400 



' 105,792 

 52,896 

 6,400 

 10.5,792 

 52,896 

 52,896 

 52,896 



158,688 



Oscillatoria 

 tenuis 



105,792 

 52.896 



Coelastrum 

 microporuni 



105,792 

 105,792 

 10.5,792 



52,896 

 105,792 

 158,688 



52,896 

 6,400 



19,200 

 158,688 



52,896 

 211, .584 

 264,480 



Scenedesmus 

 obliquus 



52,896 

 264,480 



52,896 

 211,584 



.52,896 



52,896 

 343,824 

 34-^,824 

 211, .584 

 264,480 

 158,688 

 158,688 



