50 



Biological Data 



3 

 Phytoplankton: depth (m) of chlorophyll a (mg/m ), 1, 0.29; 5, 0.22; 15, 0.41; 30, missing; 50, 0.53; 80, 0.28; 



120, 0.11. 



Water column chlorophyll a^: 0.41 mg/m~. 



Phytoplankton haul taken. 



Zooplankton: N-C N, o to 276 m, 0959-1032 GCT, 101 ml T, 101 ml S; o to 281 m, 1351-1424 GCT, 85 ml T, 85 ml S; 

 H at m, 1005-1035 GCT, 95e ml T, 95e ml S; H at m, 1405-1435 GCT, 70e ml T, 70e ml S. 

 C N, H at 254 m, 1535-1554 GCT, 19 ml T, 19 ml S; H at 57 m, 1258-1314 GCT, 95 ml T, 95 ml S; 

 H at 24 m, 1320-1335 GCT, 102 ml T, 102 ml S. 



Nekton: o, depth missing, 0841-0945 GCT, 226 ml T; o, depth missing, 1445-1550 GCT, 39 ml T. 



STATION 57 

 (regular night) 



May 17, 1958; 0600-0820 GCT; 5°32'N, 85°04. 5'W; time zone 6. 



Biological Data 



Zooplankton: N-C N, o to 293 m, 0730-0803 GCT, 79 ml T, 79 ml S; H at m, 0739-0808 GCT, 115 ml T, 115 ml S. 



Nekton: o, depth missing, 0625-0728 GCT, 147 ml T. 



STATION 58 

 (regular forenoon) 



May 17, 1958; 1702 GCT; 5°34'N, 83°26'W; 1750 fm; wind, direction missing, force 1; temp. , 

 75. 6°F wet; weather, rain; sea, moderate; wire angle, 10°; time zone 6. 



78.0°F dry. 



a) Duplicate values: 139 m, 2. 17; 206 m, 2. 35; 269 m. 2. 51; 379 m, 3. 01; 831 m, 3. 33 ^g at/L. 



