DREDGING AND HYDROGRAPHIC RECORDS. 173 



South prom Norfolk, 1919, and North from Norfolk, 1920 — Continued. 



Temperature. 



18.9 



12.8 



12.8 



12.8 



12.2 



15,6 



Water. 



3/. 





 20 

 40 

 100 





 20 

 40 

 100 

 160 





 20 

 40 

 100 

 145 





 10 

 30 



9.72 

 5.12 

 2.89 

 2.65 



8.33 

 5.90 

 4.30 

 3.60 

 4.10 



7.22 

 5.75 

 4.10 

 3.80 

 3.80 



7. 78 



20 5. .Jo 



40 5.40 



70 5.04 



7.78 



7.56 



5.28 



' 5.33 



90 7.32 



160 I 8.28 



Salinity. 



M. 

 



20 

 40 

 100 





 20 

 40 

 100 

 140 





 20 

 40 

 100 

 160 



100 

 145 





 10 

 30 



90 

 160 





 20 

 40 

 100 



29.87 

 30.77 

 32.07 

 32.45 



30.25 

 32.07 

 32.34 

 32.92 

 33.21 



31.53 

 32.16 

 32.54 

 32.81 

 33.49 



31.89 

 32.24 



32.88 

 32.98 



32.48 

 32.47 

 32.49 

 32.50 



32.61 

 32.61 

 32.74 



33.84 

 34.72 



33.17 

 33.55 

 34.04 

 34.69 



Apparatus. 



GB bot.; NZ; 

 R; Tycos. 



75'fldr. trl 



vert. net. 

 mtr. net . 



cisg. net . 



#20; #6.. 



GB bot.; NZ; 

 R; Tycos. 



vert, net 



cIsg. net, open.. 



«20; mtr.net.... 

 GB bot.; NZ; 

 R; Tycos. 



vert. net. 



clsg.net, open.. 



#20; mtr.net.... 

 GB bot.; NZ; 

 R; Tycos. 



clsg. net, open . 



#20; mtr.net.... 

 GB bot.; NZ; 

 R; Tycos. 



75'fldr 



vert, net . 

 #6 



clsg. net, open... 



PO; mtr.net 



GB bot.; NZ; 

 Tycos. 



vert, net 



#6 



clsg. net, open. 



#20; mtr. net — 

 GB bot.; NZ; 



Tycos. 

 vert. net. 



Trial. 



^f: 



botm... 



100-0. 

 72-0.. 



140-0. 

 100-0. 



50-0. 

 0.... 



155-0. 

 115-0. 



55-0. 

 0.... 



145-0. 

 105-0. 



54-0.. 

 



botm... 



70-0. 

 40-0. 



20-0. 

 0.... 



160-0. 



100-0. 

 50-0.. 

 



Drift. 



Min. 



90 



180-0. 



J«. 



Remarks. 



Alkalinity: Surf., 

 7.9; 100 meters, 

 7.9. 



Cable out 270 me- 

 ters, no catch. 



Cable out 110 me- 

 ters, angle 50°. 



Cable out 60 me- 

 ters, angle 50°. 



Meter haul full of 

 sand and gravel; 

 not saved. 



Alkalinity: Surf, 

 and 140 meters, 

 7.9. 



Cable out 120 me- 

 ters, angle 35°. 



Cable out 60 me- 

 ters, angle 35°. 



Alkalinity: Surf, 

 and 160 meters, 

 7.9. 



Cable out 140 me- 

 ters, angle 35°. 



Cable out 70 me- 

 ters, angle 35°. 



Alkalinity: Surf, 

 and 145 meters, 

 7.9. 



Cable out 130 me- 

 ters, angle 25°. 



Cable out 65 me- 

 ters, angle 25°. 



Alkalinity: Surf. 

 7.9; 70 meters. 

 S.l. 



Cable out 270 me- 

 ters; no catch. 



Cable out 50 me- 

 ters, angle 15°. 



Cable out 25 me- 

 ters, ancle 15°. 



Alkalinity: Surf, 

 and 160 meters, 

 7.9. 



Drifted into shoal- 

 er water before 

 bottles were 

 sent down. 



Cable out 150 me- 

 ters, angle 40°. 



Cable out 75 me- 

 ters, angle 40°. 



Alkalinity: Surf. 



8.0. 



