DREDGING AND HYDROGRAPHIC RECORDS. 161 



South from Norfolk, 1919, and North from Norfolk, 1920 -Continued. 



Temperature. 



•C. 



8.9 



9.4 



11.1 



10.0 



Water. 



M. 







20 



40 



100 



150 



200 



265 



330 







20 



40 



80 



'C. 

 3.50 

 2.80 

 2.73 

 3.18 

 4.26 

 4.32 

 4.24 

 4.02 

 3.61 

 2.97 

 2.95 

 2.73 



3.33 

 2.78 

 2.73 

 2.53 



3.05 

 3.07 

 2.83 

 2.80 



Salinity. 



M. 







20 



40 



100 



150 



200 



265 



330 







220 



40 



80 



32.84 

 32.83 

 32.84 

 32. 95 

 33.66 

 34.69 

 34.70 

 34. 78 

 ,32.63 

 32.66 

 32.65 

 32.69 



32.57 

 32.61 

 32.61 

 32.59 



32.68 

 32.68 

 32.75 

 32.79 



32.65 

 32.66 

 32.66 



100 32.83 

 150 33.86 

 190 34.23 



50 

 100 

 150 

 200 

 300 

 400 

 600 

 1,000 







20 



40 



90 







20 



40 



100 



150 



215 







20 



40 



90 



32.79 

 33.86 

 34.63 

 34.67 

 34.67 

 34.71 

 34.81 

 34.92 



32.66 

 32.67 

 32. 6G 

 32.70 

 32.81 

 32.83 

 32.86 

 34.29 

 34.42 

 34.70 

 32.32 

 32 34 

 32.57 

 33.02 



32.44 

 32.43 

 32.48 

 32.71 



Apparatus 



GB bot.; NZ; 

 Tycos. 



vert, net 



clsg. net 



#20, #10 



clsg. net, open. . 



GB bot.; 

 Tycos. 



vert.net... 

 mtr.net. . . 



NZ; 



#20, #10, 



bot.; NZ; 

 Tycos. 



vert.net 



mtr.net 



#20, #10. 

 80' cod. . 



GB bot. 

 Tycos. 



vert. net. 

 mtr.net. . 



NZ; 



#20, #10... 



GB bot.; 



Tycos. 



vert, net- . 

 mtr.net.. 



NZ; 



Trial. 



M. 



340-0. 

 165... 







125-0. 



80-0... 

 40-0... 



70-0.. 

 60-0.. 







botm.. 



90-0. 

 50-0. 



#20, #10 



GB bot.; NZ; 

 R; Tycos. 



clsg. net, open . . 



mtr. net. 

 #20, #10.. 



GB bot.; NZ 



Tycos. 

 #20, iilO 



GB bot.; NZ 

 R; Tycos. 



vert, net 



#20, #10 



GB bot.; NZ: 

 R; Tycos. 



vert, net 



GB hot.; NZ 

 R; Tycos. 



vert, net 



#20, #10 



#10 



150-0. 



Min. 



1,000-0. 



500-0... 30 

 30 



30 



150-0. 

 



75-0. 



70-0. 

 C... 

 70-0- 



30 



Drift. 



Remarlcs. 



Alkalinity: Surf., 

 7.9; 330 meters, 

 8.0. 



Open haul with 



else. net. 

 Alkalinity: Surf. 



and 180 meters, 



7.9. 



Cable out (mtr. 

 net) 75 meters, 

 angle 40-45°. 



Alkalinity: Surf, 

 and 70 meters, 

 7.9. 



Cable out (mtr. 

 net) 70 meters. 



Several ripe had- 

 dock taken. 



Alkalinity: Surf, 

 and 90 meters, 

 7.9. 



Cable out 90 me- 

 ters. 



Alkalinity: Surf. 

 150, and 190 

 meters, 7.9. 



Cable out 150 

 meters. 



.\lkalinity: Surf., 

 and 1,000 me- 

 ters, 7.9. 



Open haul with 

 clsg. net. 



Between stations 

 20069 and 20070, 

 Mar. 12, at 7.00- 

 7.20 p.m., towed 

 #10, ship slowed 

 down. 



Sea too rough to 

 risk large nets. 



Sea too rough to 

 risk townefs. 

 Alkalinity :Siirf., 

 7.95; 90 meters, 

 8.1. 



Alkalinitv: Surl., 

 7.9. 



