sampler ) , table 11. The procedures for 

 plankton tows, methods for sorting and 

 counting, and calculations of numbers of 

 organisms were described under methods 

 for Cruise 3. Counts are given for 

 major groups as indicated. 



Numbers of plankton organisms per cubic 

 meter of water (continuous plankton 

 sampler ), table 12. Description of 

 this sampler, its use, and methods of 

 calculating numbers of organisms were 

 given under methods in report for Cruise 

 1. Counts are given by compartment for 

 major groups as indicated. 



List of the species of fish in dip-net , 

 trolling, stomach contents, and larval 

 fish net collections (D-dip net; T - 

 trolling; S-stamach contents; L-larval 

 fish net ), table 13. The species are 

 listed in alphabetical order, followed 

 by symbols indicating method of capture. 



Numbers and species of fish taken by 

 trolling , table DT! The stage of gonad 

 development is based on International 

 Council classifications of gonad maturity 

 for the herring (International Councils 

 Rapports et Proces-Verbaux des Reunions, 

 Vol. LXXIV, p. 117, March 1931)- The 

 scale is only a guide to general classi- 

 fications and must be treated as such. 



This scale follows: 



Stage I. Virgin individuals. Very 

 small sexual organs close 

 under vertebral column. 

 Wine-coloured torpedo - 

 shaped ovaries about 2-3 

 cm. long and 2-3 mm. thick. 

 Eggs invisible to naked 

 eye. Whitish or grayish 

 brown knife -shaped testes 

 2-3 cm. long and 2-3 mm. 

 broad. 



Stage II. Maturing virgins or re- 

 covering spents. Ovaries 

 somewhat longer than half 

 the length of ventral cav- 

 ity, about 1 cm. diameter. 

 Eggs small but visible to 

 naked eye. Milt whitish, 

 somewhat bloodshot, same 

 size as ovaries, but still 

 thin and knife-shaped. 



Stage III. Sexual organs more swollen, 

 occupying about half of 

 ventral cavity. 



Stage IV. Ovaries and testes nearly 

 filling 2/3 of ventral 

 cavity. Eggs not trans- 

 parent, milt whitish, 

 swollen. 



Stage V. Sexual organs filling ven- 

 tral cavity. Ovaries with 

 some large transparent 

 eggs. Milt white, not yet 

 running. 



Stage VI. Roe and milt running 

 ( spawning ) . 



Stage VII. Spents. Ovaries slack 



with residual eggs. Testes 

 baggy, bloodshot. Doubtful 

 cases are indicated by 

 quoting two stages e.g. 

 "St. I-II, St. VII-II,"etc. 



Numbers and species of fish taken by 

 dip net , table 15 . There is shown, by 

 family, the genera and species taken. 

 Numbers of specimens from each station 

 are given in parentheses, followed by 

 the approximate size or size range of 

 standard length, in' millimeters. 



Numbers and species of fish taken by 

 larval fish net , table lb. At irregular 

 times (as conditions warranted) surface 

 tows were made with a meter net of l/8" 

 mesh. Towing speeds same as for l/2 

 meter nets. 



ACKNOWLEDGEMENTS 



Acknowledgement is made to the follow- 

 ing agencies and individuals for contribu- 

 tions in securing and processing the material 

 presented. To the Navy Hydrographic Office 

 for their cooperation in planning and execut- 

 ing the field program and for processing the 

 physical oceanographic data. To the Office 

 of Naval Research, and Dr. Sidney R. Galler 

 in particular, for help in planning and exe- 

 cuting the field program. To the Georgia 

 Game and Fish Commission for their coopera- 

 tion in the biological and chemical studies; 

 through Frank T. Knapp, biologist, and Joseph 

 E. Moore, chemist (now a member of Fish and 



