1920] 



Allen: Plankton of the San Joaquin River 



277 



-Plankton Organisms Per Cubic Meter in Smith's Canal, 

 Hourly Series in 1913 — (Continued) 



1913 Navicula 



8/11 viridis 



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. 6,400 

 6:40 p.m. 6,400 



1913 Surirella 



8/11 sp. 



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.: 



158,688 

 343,824 

 211,584 



60.S00 

 211,584 



80,000 

 15S.6SS 

 396,720 

 608,304 

 502,512 

 449,616 

 396,720 

 396,720 



1913 

 8/11 



7 A.M. 



8 P.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. 



5:48p. 

 6:40p 



Closterium 

 rostratum 



6,400 

 6,400 



52,896 



6,400 



6,400 



52,896 

 52,896 

 52,896 

 105,792 

 . 52,896 



Total 

 Algae 



31,996,026 

 21,060,304 

 19,557,124 

 21,066,912 

 20,339,776 

 19,958,608 

 26,413,256 

 39,724,656 

 42,793,872 

 46,524,776 

 61,656,448 

 M. 56,696,516 

 m.68,856,096 



Nitzschia 

 acicularis 



449,616 

 502,512 

 343.S24 

 158,688 

 396,720 

 105,792 

 264,480 

 502,512 

 661,200 

 343,824 

 872,784 

 1,322,400 

 1,877,808 



Synedra 

 ulna 



158,688 



211.5S4 

 • 396,720 

 60N.304 

 396,720 

 343,824 

 158,688 

 211.5S4 

 211,584 

 52,896 

 105,792 

 396,720 

 714,096 



264,480 



608,304 



608,304 



608,304 



211,584 



661,200 



766,992 



343,824 



1,057,920 



872,784 



1,216,608 



1,110,816 



2,089,392 



crassicauda 



52,896 

 52,896 



52,896 

 52,896 



52..S96 



Nitzschia 

 Bigma 

 52,896 

 52,896 



15S.6SS 



'343,824 



15N.6XX 



15S.688 



59,296 



158,688 



211,584 



158,688 



Synedra 

 radians 



343,824 



15N.0SN 



264,480 

 264,480 



555,408 

 105,792 

 502,512 

 714,096 

 502,512 

 714,096 

 264.4S0 

 555,408 

 1,375,296 



Pleurostauron Stauroneis 



parvulum phoenicenteron 



52.896 



52,896 



6,400 



52,896 

 105,792 

 52,896 

 52,896 



29,525,024 

 17,451,424 

 17,2X9,844 

 17,866,704 

 17,179,664 

 15,688,528 

 21,719,160 

 31,129,904 

 31,307,184 

 34,769,072 

 47,514,016 

 44,121,664 

 51,818,032 



Mougeotia Staurastrum Staurastrum 



6,400 



52,896 



6,400 



52,896 



105,792 



12,800 



.V2. S'.IO 



204,4X0 



105,792 



15X.0XX 



52,896 



158,688 



105,792 



52,896 



52,896 



52,896 



Chlamyd 



52, S9li 

 52,896 



211,584 

 105,792 



52,896 

 105,792 



52,896 



52,896 

 52,896 



Closterium 

 linatum 



6,400 

 6,400 



52,896 555,408 

 105,792 105,792 

 502,512 



Total 

 Conjugatae 



342,966 



680,400 



621,104 



714,096 



330,176 



726,896 



826,288 



528,960 



1,242,208 



1,090,758 



1,428,192 



1,335,200 



2,248,080 



Chromulina 

 sp. 



2,750,592 

 2,539,008 

 2,750,592 

 2,591,904 

 1,719,120 

 3,147,312 

 1,719,120 

 l,X77,XO,X 

 2,142,2S8 

 1,824,912 

 2.0X9.392 

 2,248,080 

 2,X56,:!,X4 



52,896 



Closterium 

 acerosum 



6,400 

 6,400 

 6,400 



6,400 



19,200 



25,600 



6,400 



52,896 



12,800 



Total 



Chlorophyll 



bearing 



35,677,850 

 24,947,312 

 24,220,324 

 25,405,888 

 23,936,704 

 25,301,712 

 29,217,400 

 42,512,800 

 46,497,248 

 49,945,672 

 65,X39,.XSS 

 60,499,184 

 73,644,688 



Eudorina 

 elegaus 

 211,584 

 343,824 

 396,720 

 396,720 

 105,792 

 502,512 

 211,584 

 396,720 

 555,408 

 264,480 

 608,304 

 555,408 

 343,824 



