462 Birge—Vertical Distribution of Pelagic Crustacea. 
STATISTICS OF CYCLOPS. 
Table K — The average catch and the percentile distribution of Cyclops 
by day and night , for the month. 
Depth. 
Average. 
Day. 
i 
Night. 
Meters. 
No. 
Per cent. 
No. 
Per cent. 
No. 
Per cent. 
0—3. 
863 
42.96 
997 
44.75 
682 
39.64 
3-6. 
612 
30.44 
686 
30.81 
517 
30.05 
6—9. 
329 
16.35 
336 
15.08 
319 
18.55 
9-12.. 
176 
8.77 
181 
8.11 
171 
9.92 
12-15. 
28 
1.38 
26 
1.17 
30 
1.74 
15—18. 
2 
.10 
2 
.08 
2 
.13 
Total. 
2010 
2228 
1721 
The facts of this table are represented in PI. X, fig. 2. 
Table L— Average, and day and night distribution by Periods. 
Pekiod I.—July 7-14. 
Depth. 
Average. 
Day. 
Night. 
Meters. 
No. 
Per cent. 
No. 
Per cent. 
No. 
Per cent. 
0-3. 
234 
37.38 
233 
36.24 
236 
38.50 
3-6. 
154 
24.60 
178 
27.68 
130 
21.21 
6-9. 
137 
21.88 
157 
24.42 
111 
18.11 
9—12. 
71 
11.34 
60 
9.33 
85 
13.87 
12—15. 
28 
4.47 
10 
1.56 
50 
8.15 
15-18. 
2 
.32 
5 
.77 
1 
.16 
Tntfll 
626 
643 
613 
