PLANKTON PRODUCTION IN FISH PONDS 
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Table 8.- — Number of algse per liter of water in the centrifuge plankton in the C ponds in 1928 
POND 0 1 
Organism 
June 27 
July 7 
July 19 
July 28 
July 30 
Aug. 9 
Aug. 20 
Aug. 30 
14, 000 
9, 000 
9,000 
9, 000 
32, 000 
24, 000 
1,800, 000 
9,000 
22,500 
6,400 
89, 600 
12, 800 
12, 800 
563, 200 
960, 000 
3, 000 
9,000 
24, 000 
21, 600 
7,200 
Oocystis, single 
31, 500 
36, 000 
21, 600 
93, 600 
1,920, 000 
4, 500 
4,500 
24, 000 
756, 000 
748, 800 
76, 800 
133, 000 
960, 000 
115,200 
216, 000 
7, 200 
4, 500 
1, 843, 200 
7, 680, 000 
170, 000 
24, 000 
14, 400 
6, 400 
12, 800 
24, 000 
POND C 2 
Organism 
June 27 
July 7 
July 19 
July 30 
August 9 
August 20 
August 30 
205, 500, 000 
120, 000 
11, 160, 000 
58, 320, 000 
40, 200, 000 
480, 000 
48, 000 
Chroococcus, single 
Chroococcus, colony 
1, 140, 000 
2, 999, 600 
195, 300 
342, 000 
54, 000 
1, 178,310 
572, 880 
13, 888, 300 
3, 333, 120 
8, 032, 000 
9, 728, 000 
60, 000 
60, 000 
39, 060 
442, 680 
36, 000 
90, 000 
Oocystis, single 
240, 000 
840, 000 
60, 000 
8, 550, 000 
540, 000 
18, 000 
91, 140 
729, 120 
720, 000 
Pediastrum 
Scenedesmus 
13, 020 
546, 840 
450, 000 
13, 020 
30, 000 
180, 000 
540, 000 
18, 000 
6, 000 
6, 510 
39, 060 
34, 720 
2, 430, 400 
5, 568, 000 
48, 000 
96, 000 
34, 720 
POND C 3 
Aphanizomenon. . 
48, 000, 000 
252, 000 
101, 700, 000 
868, 050 
110, 670 
693, 000 
1, 368, 000 
Chroococcus, single 
17, 920, 000 
528, 000 
4, 230, 666 
225, 460 
234, 360 
126, 000 
126, 000 
9, 000 
1, 236, 900 
429, 600 
36, 000 
54, 500 
24, 000 
48, 000 
Oocystis, single 
72, 000 
91, 140 
36, 000 
126, 666 
1, 219, 720 
234, 360 
13, 020 
3, 176, 880 
192, 000 
3, 840, 000 
7, 040, 000 
37, 550 
313, 735 
13, 500 
63, 000 
58, 500 
337, 500 
18, 000 
Scenedesmus 
780, 000 
1, 260, 000 
12, 000 
13, 020 
1 
POND C 4 
Aphanizomenon — 
Botryococcus 
Ceratium. 
Chroococcus, single. 
Cosmarium 
Crucigenia 
13, 500 
24, 000 
6, 000 
264, 000 
12, 000 
’ 126," 666 
9, 000 
3, 000 
Eudorina 
Fragilaria 
Melosira 
Navicula 
Ooeystis, single. 
Oocystis, colony. 
Pediastrum 
Periodinium 
Scenedesmus 
Staurastrum 
Stephanodiscus.. 
Synedra... 
Tetraedron 
3, 000 
3,000 
3,000 
3, 000 
3, 000 
4, 500 
3, 000 
12, 000 
12, 000 
24, 000 
12, 000 
15, 000 
9, 000 
123. 000 
3,000 
3, 000 
6,000 
6, 000 
3, 000 
210, 000 
3, 000 
9, 000 
30, 000 
66, 000 
21, 000 
3,000 
3, 000 
3,000 
3, 000 
12, 000 
9, 000 
3, 000 
12, 000 
24, 000 
9,000 
9,000 
3, 000 
12, 000 
15, 000 
3,000 
3, 000 
63, 000 
78, 000 
6, 000 
3, 000 
