208 



University of California Publications in Zoology [ VoL - 



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 



V 5 

 1/12 

 1/19 

 1/25 

 2/ 2 

 2/ 8 

 2/15 

 2/23 

 3/ 1 

 3/ 8 



Table 2. — Organisms Per Cubic Meter in Plankton op 

 San Joaquin River in 1913 — (Continued) 



Closterium Closterium Closterium Mougeotia 



unidentified acerosum 



3,200 



6,400 

 1,600 



3,200 



Spirogyra 

 sp. 



800 



1,200 

 19,836 



tinatum rostratum 



6,400 

 3,200 



3,200 



6,400 



12.S00 



3,200 

 12,800 

 3,200 



'6,400 

 12,800 

 25,600 

 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 



6,400 

 3,200 



6,400 



3,200 



0,400 



12. SOD 



1,600 



3,200 

 211,584 



105,792 

 105,792 



1,600 

 3,200 



Total 



Conjugatae 



1,600 



1,800 



3,200 



21,436 

 1,600 



23,036 



12,800 

 8,000 

 1,600 

 9,600 



1,600 



3,200 

 3,200 



3,200 



555,408 



370,272 



476,064 



370,272 



581,856 



2,591,904 



2,:;.so„T2(i 



4,347,472 



211,584 



952,128 



317,376 



15S,liSS 



1,600 



1,600 



Total 



Chlorophyll 



bearing 



5,814,336 

 2,278,204 

 13,272,348 

 3,660,576 

 13,769,920 

 16,125,644 

 8,114,160 

 9,711,436 

 14,171,888 

 11,555,584 



Spirogyra 

 protecta 



3,200 



3,200 

 238,032 



6,400 



Total 

 Algae 



5,813,936 



2,275,804 

 11. Ill is. I'M 



2,733,296 

 12,047,440 

 13,124,668 



5,146,432 



7,198,124 

 13,400,944 

 11,348,448 



