Statistics of Diaptomus. 453 



Period II— July 16-19—24 Series (15 Day, 9 Night). 



Depth. 



Average. 



Day. 



Night. 



Meters. 



No. 



Per cent. 



No. 



Per cent. 



No. 



Per cent. 



0—3 



3—6 



6—9 



2675 

 1133 



384 



53 



3 



5 



62.9 

 26.6 



9. 

 1 2 

 .08 

 .13 



i 



3136 



1198 



222 



18 

 4 

 6 



68.41 



26.13 



4.84 



.39 



.08 



.13 



1915 



102 1 



652 



99 



3 



5 



51.75 

 27.69 



17. GO 



9—12 



12—15 



2.68 

 .08 



15-18 .... 



.13 



Total 



4253 







4584 





j 3698 











Period III— July 27-29—14 Series (7 Day, 7 Night). 



Depth. 



Average. 



Day. 



Night. 



Meters. 



No. 



Per cent. 



j 



No. 



Per cent. 



No. 



Per cent. 



0—3 



2271 



1831 



881 



156 



3 



1 



1 

 44.16 



35 60 



17.13 



3.03 



.06 



.02 



2706 



2169 



690 



127 



5 



1 



47.49 



38.06 



12.10 



2.22 



.08 

 .01 



1836 



1544 



1060 



186 



1 



1 



39.64 



3—6 



6—9 



9—12 



12—15 



33.36 



22.90 



4.01 



.02 



15—18 



.02 





5143 





5698 





4628 









Period IV— Aug. 2-4—12 Seiies (6 Day, 6 Night). 



Depth. 



Average. 



Day. 



Night. 



Meters. 



No. 



Per cent. 



No. 



Per cent. 



No. 



Per cent. 



0—3 



3—6 



6—9 



9—12 



12—15 ; . 



15—18 



1560 



919 



715 



224 



5 



5 



45 51 



26.81 



20.86 



6.53 



.15 



.15 



1805 • 



1178 



795 



307 



5 



5 



44.07 



'*8.76 



19.34 



7.49 



.12 



.12 



1316 



661 



636 



142 



5 



5 



47.61 



23.95 



23.01 



5.13 



.18 



.18 



Total 



3428 





4095 





| 2765 













