II.— HY OROGRAPHIC AL OBSERVATIONS MADE IN THE 

 NORTH ATLANTIC DURING 1903 AND 1904 ON 

 BOARD DR. WOLFENDEN'S YACHT ' SILVER BELLE ' 



By H. N. Dickson, M.A , D.Sc. 



In the summer of 1903 the Silver Belle made two cruises. Oue, 

 to the west of Ireland, during June and July, gave a valuable 

 section along the meridian of Long. 12° W. from Lat. 51° N. to 

 Lat. 54° 45', besides other stations. A second, in August, gave two 

 lines across the entrance to the Faeroe- Shetland Channel, one south 

 of the Wyville-Thomson ridge, and one a little to the north of it, 

 as well as a longitudinal section from the south of the ridge north- 

 wards so as to connect with the observations of the International 

 Council, which were made almost at the same time. The total 

 number of soundings made was twenty-two, and at each station 

 temperature observations were made and samples collected. 



During; 1904 the Silver Belle made a still more extended vova°;e. 

 Starting from the south-west of Ireland on June 20, a line of twenty 

 soundings at depths clown to 2,000 fathoms was run to the Azores. 

 Temperature obsei'vations were made at all the stations, and samples 

 were collected at six. 



The next line was from the Azores to Madeira, and thence to 

 Gibraltar, through the Straits and eastward in the Mediterranean as 

 far as Long. 3° 41' W. This line includes soundings at twenty-two 

 stations ; samples were collected at eight. 



The third and last line runs westwards from Gibraltar to about 

 Long. 10° W., then northwards to the mouth of the English Channel, 

 connecting w r ith the line of the International Council. On this line 



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