2()(i 



University of CalifoDiia I'ublicdiioiis in Zoologi) 



[Vol. 22 



1013 



11/30 

 12/ 6 

 12/14 

 12/20 

 12/27 



Table 2. — Organisms Per Cunic Meter in Plankton of 

 San Joaquin River in 1913 — {Conlinued) 



Nftvic'ula 

 dubia 



Naviculu 

 gracilis 



476,064 

 396,720 

 13-_',210 

 IS."), 13(1 

 264,480 



Navicula 

 sp. 



6,400 



Navicula 

 viridis 



3,200 



3,200 



Xitzarhia 

 aciculuriH 



52,896 

 79,344 



15.S,6SS 



1,C)1)0 



r)2,.S96 



Nitsschia 

 angulahs 



1913 



1/5 



1/12 



1/19 



1/25 



2/ 2 



2/ 8 



2/15 



2/23 



3/ 1 



3/ 8 



3/15 



3/23 



3/29 



4/ 5 



4/13 



4/19 



4/26 



5/ 3 



5/10 



5/17 



5/24 



5/31 



6/ 7 



6/16 



6/21 



6/28 



7/ 5 



7/12 



7/19 



7/26 



8/ 2 



8/ 9 



8/15 



8/23 



8/31 



9/ 6 



9/13 



9/20 



9/27 



10/ 4 



10/11 



10/18 



10/26 



11/ 1 



11/ 8 



11/15 



11/22 



11/30 



12/ 6 



12/14 



12/20 



12/27 



Nitzschia 



»igina 



1,600 



6,400 



3,200 



52,896 



211, .584 



3,200 



317,.376 



317,376 



6,400 



3,200 



3,200 



6,400 

 105,792 

 10.5,792 

 211, .584 

 105,792 

 105,792 

 105,792 

 105,792 

 105,792 

 317,376 



"i2'800 



3,200 

 3,200 

 1,600 

 3,200 

 3,200 

 3,200 



Nitzsrliia 

 siginoideii 



400 



3,200 



1,600 



62,896 



1,600 



3^260 

 79,.344 



3,200 

 79,344 



52,896 

 9,600 



52,896 



12,800 



6,400 



105,792 



105,792 



12,800 

 3,200 

 6,400 

 6,400 



1,600 



Nitzscliia 

 sp. 



79,344 

 23,436 



1,600 



52,896 



52,896 

 1.58,688 



343,824 



52,896 



108,992 



423,168 



899,232 



317,376 



214,784 



52,896 



52,896 



1,600 



185,136 



15S,i>iS 



3,200 



370,272 



476,064 



370,272 



2,539,008 



12,800 



Nitzschia 

 verniicularis 



400 



4,800 

 12,800 



1,600 

 3,200 



9,600 



6,400 



6,400 



3,200 

 1,600 



6,400 

 6,400 



dAOO 



105,792 



25,600 



423,168 



317,376 



211, .584 



105,792 



12,800 



12,800 



51,200 



" 12,800 

 6,400 

 6,400 



Pleurostauron 

 parvuluni 



238,032 

 145,464 

 238,032 

 522,348 

 396,720 

 476,064 

 423,168 

 238,032 

 264,480 

 502,512 

 317,.376 

 476,064 

 581,856 

 343,824 

 502,512 

 132,240 

 661,200 

 449,616 

 132,240 

 687,648 

 793,440 

 1,216,608 

 793,440 

 211,584 

 79,344 

 1,600 

 1,600 

 132,240 

 3,200 

 264,480 

 105,792 



Hhopalodia 

 gibba 



105,792 

 105,792 



317,376 



211,584 

 317,376 

 105,792 



12,800 



52,896 

 2,896 



52,896 

 158,688 

 132,240 



52,896 

 238,032 

 158,688 

 211,584 



6,400 

 3,200 



