11. Weather . Weather is coded as indicated 

 in table 2, "Numerical Weather Codes- 

 Present Weather." 



12. Cloud . Cloud type and amount are coded 

 as indicated in table 3, "Cloud Type"; 

 and table 4, "Cloud Amount." 



13. Sea . Sea direction and amount are 

 coded as indicated in table 5, "Sea 

 Amount"; and table 1. 



14. Swell . Swell directions and amount 

 are coded as indicated in table 6, 

 "Swell Amount"; and table 1. 



15. Visibility . Visibility is coded as 

 indicated in table 7, "Visibility." 



10. 



Carbohydrates (Arabinose_) • These 

 values are given in terras 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 concentra- 

 tions of carbohydrate substances. 



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. 



16. Water Transparency . Given as meters 

 to which a Secchi disc is visible. 



Subsurface Observations 



1. Seunple Depth . Observed (actual) depth 

 of each sample is given in meters. 

 Interpolated values at standard depths 

 are also given. The standard depths 

 in meters are: 0, 10, 20, 30, 50, 75, 

 100, 150, 200, 250, 300, 400, 500, 600, 

 700, 800, 1000, 1200, 1500, 2000, 2500, 

 3000, Eind thence every 1000 meters. 



2. Temperature . The centigrade tempera- 

 ture is given in degrees and hundredths. 



3. Salinity . Salinity is given in parts 

 per thousand to two decimal places. 



4. Sigma-t . To convert to density divide 

 by 1000 and add 1. Thus, a sigma-t 

 value of 22.35 converts to a density 

 of 1.02235. 



5. 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. 



Biological 



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 . 



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" (pro- 

 cedures for determination were given 

 under methods in report for cruise 1). 

 Very few samples contained large organ- 

 isms such as jellyfish (which were re- 

 moved), 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 organ- 

 isms were described under methods in 

 report for cruise 1. Counts are given 

 for major groups as indicated. 



Numbers of plzinkton organisms per 

 cubic meter of water (high-speed sam - 

 pler ) , table 11. The procedures for 

 plzuikton tows, methods for sorting and 



