208 



University of California Publications in Zoolotjij [Vol.: 



Table 2. — Organisms Per Cubic Meter in Plankton of 

 San Joaquin River in 1913 — (Continued) 



1913 



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 /r5 



11/22 

 11/30 

 12/ 6 

 12/14 

 12/20 

 12/27 



1913 



1/ 5 

 1/12 

 1/19 

 1/25 

 2/ 2 

 2/ 8 

 2/15 

 2/23 

 3/ 1 

 3/ 8 



Alfiac 

 unidentified 



1,600 



Spirogyra 

 sp. 



800 



1,200 

 19,836 



Cloaterinm 

 acerosuiii 



3,200 

 6,400 



3,200 



'6;400 

 3,200 



""3,206 



(3^466 

 12,800 



3,200 



12,800 



3,200 



'6,400 

 12,800 

 25,{)()() 

 38,400 



19,200 

 12,800 

 64,000 

 38,400 

 12,800 

 25,600 



25,600 



6,400 



3,200 

 3,200 

 3,200 

 3,200 



1,600 



Staurastrum 

 A 



Ciosteriuni Closterium 



acuminatum rostraturn 



3,200 

 6,406 



12,800 



Staurastrum 

 sp. 



1,600 



3,200 

 "2ii;584 



105,792 

 "i'06,792 



1,600 



3,206 



6,400 

 3,200 



6,406 



Total 

 Conjugatae 



1,600 



1,800 



3,200 



21,436 



1,600 



23,036 



12,800 



8,000 



1,600 



9,600 



MouKcotia 

 sp. 



1,600 



"3,266 

 "3,206 



3,200 



555,408 



370,272 



470,064 



370,272 



581,8.56 



2,591,904 



2,380,320 



4,347,472 



211,584 



9.52,128 



317,376 



317,376 



158,688 

 1,600 



1,600 



Total 



Chlorophyll 



bearing 



5,814,336 



2,278,204 



13,272,.348 



3,6(i0,57(i 



13,7(19, 920 



16,12."),<;44 



8,114.160 



9,711,436 



14,171,888 



11,5.55,584 



Spirogyra 

 protecta 



3,200 



3,266 



"238i632 



6,400 



79,344 



Total 

 Algae 



.5,813,936 



2,275,804 



11,008,244 



2.733,296 



12,047.440 



13,124,668 



5.146,432 



7.198,124 



13.400,944 



11,348,448 



