62 INTERNATIONAL ICE OBSERVATION AND ICE PATROL SERVICE. 



interval it drifted 33 mUes, 17°, true. It is interesting to note that 

 the movement of this berg was due to the effects of the Gulf Stream's 

 northerly and easterly set, although it was approximately 35 miles 

 north of the southern boundary of the "cold wall" and the surround- 

 ing water was polar in character. This demonstrates the frictional 

 action between the two currents, as described in the oceanographic 

 summary, page 95. 



On May 23, a French fishing vessel was observed at anchor in 43° 

 50' N., 49° 36' W. She was headed south, true, the wind at the time 

 being WNW., force 2 to 3, which indicated the presence of a surface 

 current setting to the northward at that time and place. 



A number of swirls and tide rips, runniug iu a general north and 

 south direction, were observed on the east slope of the Grand Banks 

 in lat, 44° 00' N. In cutting across this current an allowance of 0.8 

 of a knot was made, and from later astronomical observations this 

 proved to be a correct estimate of its strength. 



From a careful selection of reports of ice observed in the vicinity 

 of the northern part of the Grand Banks, it was determined that the 

 current setting to the south in that region had a velocity between 0.4 

 knot and 0.5 knot per hour. 



To sum up : The ice reported and observed during May consisted of 

 8 bergs south of the 43d parallel and 16 south of the 45th parallel. 

 No ice was either reported or observed on the Grand Banks during 

 the month, and the French fishermen who were interviewed cor- 

 roborated this fact. The prevailing winds were from the west and 

 they were not so strong as those during the preceding month. Fog 

 was present only 12 per cent of the time and low visibility and fog 20 

 per cent. 



JUNE. 



The fine, clear weather of May was succeeded by southerly winds 

 and a great amount of fog during the first half of June, which greatly 

 handicapped the search for bergs in the cold-water area. (See Fig. 3.) 



Surface current observations were taken June 4, while lying at 

 anchor in 43° 13' N., 50° 03' W., as follows: 



The observations are subject to error, owing to the crudeness of 

 the apparatus emploj'^ed, but the results are of value in that they 

 indicate that the surface current on the Grand Banks at the position 

 given was of a rotary tidal nature, moving in a clockwise direction. 

 This agrees with previous current observations taken on the Grand 

 Banks. 



Currents in the deep water were noted as follows : In the vicinity of 

 42° 10' N., 49° 00' W., a current was observed setting 77°, true, at 



