value of 22.35 converts to a density 

 of 1.02235. 



Dissolved Oxygen . These values are 

 given in milliliters per liter to two 

 decimal places. 



6. Total Phosphorus . Values are given in 

 microgram atoms per liter to the near- 

 est 0.1 of a unit. 



7. Inorganic Phosphate . Values are given 

 in microgram atoms per liter to the 

 nearest 0.1 of a unit. 



8. Nitrate-nitrite . These values are 

 given in microgram atoms per liter to 

 the nearest 0.5 of a unit. 



9. Carbohydrates (Arabinose ). These 

 values are given in terms of milligrams 

 per liter to the nearest 0.1 of a unit. 

 Collier et_ al (1953) presented a tech- 

 nique for estimating certain elements 

 of the organic materials in sea water 

 which react to the test for carbohy- 

 drates. The carbohydrate values are 

 given as arabinose equivalents, and 

 are not necessarily the actual concen- 

 trations of carbohydrate substances. 



10. Proteins (Tyrosine ). These values are 

 given to the nearest 0.1 of a unit as 

 milligrams per liter of protein mate- 

 rial in sea water, which reacts to the 

 test for tyrosine. 



Biological 



1 . Plankton volumes (Gulf III sampler ) , 

 table 8. The position given is that 

 at beginning of the tow. The depth of 

 the haul is given from to the great- 

 est depth reached. The volumes as 

 given are "wet volumes" (procedures for 

 determination were given under methods 

 in report for Cruise 1). Very few 

 samples contained large organisms such 

 as jellyfish (which were removed), so 

 that the volumes represent smaller 

 organisms. 



2. Plankton volumes (Gulf lA high-speed 

 sampler ) , table 9. The position given 

 is that at the center of the tow. All 

 tows were made at the surface. The 

 volumes as given are "wet volumes" 

 (procedures for determination were 



given under methods in report for Cruise 

 1). Very few samples contained large 

 organisms such as jellyfish (which were 

 removed), so that the volumes represent 

 smaller organisms. 



Numbers of plankton organisms per cubic 

 meter of water (Gulf III sampler ) , 

 table 10. The procedures for plankton 

 tows, methods for sorting and counting, 

 and calculations of numbers of organisms 

 were described under methods in report 

 for Cruise 1 , Counts are given for 

 major groups as indicated. 



Numbers of plankton organisms per cubic 

 meter of water (high-speed 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. 



contents ) , 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 14. The stage of gonad 

 development is based on International 

 Council classifications of gonad matu- 

 rity for the herring (International 

 Councils Rapports et Process-Verbaux 

 des Reunions, Vol. LXXIV, p. 17, March 

 1931). The scale is only a guide to 

 general classifications 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 ram. thick. Eggs 



