442 



Birge — The Crustacea of the Plankton. 



Table E. — Continued. 



June 1-15 . 

 June 16-80 . 

 July 1-15., 

 July 16-31.. 

 Aug. 1-15 . 

 Aug. 16-31 , 

 Sept. 1-15. 

 Sept. 16-30. 

 Oct. 1-15.. 

 Oct. 16-31.. 

 Nov. 1-15 . 

 Nov. 16-30 . 

 Dec. 1-15.. 

 Dec. 16-31.. 



Av. 



189.5 

 358.7 

 371.0 

 317.5 

 326.8 

 209.0 

 157.1 

 228.6 

 364.8 

 469.5 

 267.7 

 173.9 

 115.5 

 93.1 



Max. 



297.6 

 716.1 

 442.0 

 412.1 



Min, 



139.2 

 223.2 

 341.5 

 138.0 



Per cent, in each 3 m. level. 



0-3. 



30.0 

 42.6 

 37.0 

 49.5 

 48.8 

 30.0 

 33.8 

 29.2 

 18.3 

 27.7 

 18.1 

 25.1 

 14.3 

 6.5 



3-6. 



20.0 

 23.3 

 29.0 

 30.0 

 25.2 

 32.7 



22.5 

 13.7 

 22.6 

 20.8 

 19.8 

 13.6 

 29.2 

 20.8 



6-9. 



11.1 



12.8 

 14.6 

 18.7 

 20.8 

 10.8 

 15.8 

 14.4 

 18.7 

 15.5 

 12.2 

 12.0 

 10.7 

 19.8 



9-12. 



9.8 



9.6 



9.0 



1.4 



4.8 



24.0 



12.6 



18.4 



14.3 



12.6 



19.2 



15.3 



16.0 



13.0 



12-15. 



8.3 



4.8 



9.3 



0.2 



0.3 



2.0 



9.9 



14.2 



14.3 



12.2 



14.2 



12.4 



12.6 



17.0 



15-18. 



20.5 



6.8 



1.0 



0.1 



0.0 



0.5 



5.3 



10.1 



11.7 



11.2 



16.5 



11.6 



17.1 



22.9 



