42 INTERN ATIOKAL ICE OBSERVATION AND ICE PATROL SERVICE. 



Tampa was this day ordered to relieve the Modoc upon the expira- 

 tion of the latter's patrol period on June 30, and to carry on the 

 patrol until the ice situation cleared up. At daylight we were along- 

 side of a small, two-pinnacle berg, in lat. 41° 45' K., long. 49° 34' W. 

 The sea-water temperature in the vicinity was 59° F. This berg 

 was calving frequently and had a long streak of brash ice trailing on 

 to leeward. During the day six other bergs were located, as follows: 

 A medium-sized one, with no prominent characteristics, in lat. 42° 44' 

 N., long. 49° 41' W.; one in lat. 42° 38' N., long. 49° 22' W.; one, 

 with two pinnacles and a channel way between, the loftier pinnacle 

 190 feet high, diameter of base 400 feet, in lat. 43° 08' N., long. 49° 

 34' W.; a small one in lat. 42° 59' N., long. 49° 22' W.; one, 85 feet 

 high and 540 feet long, in lat. 43° 03' N., long. 48° 53' W.; and one 

 resembling a floating dry dock in lat. 42° 46^ N., long. 49° 08' W. 

 During the night we drifted near the last berg mentioned- A few 

 fulmars, petrefs, and whales were seen during the day. 



Gave special ice information to the steamship Gloria de Larrinaga. 



June 27. Light SW. to W. airs and gentle winds; partly clear, hazy, 

 good visibility. Smooth sea. We searched the southeastern quad- 

 rant of the probable berg area and saw no ice. The late afternoon 

 was given over to searching for the small berg last seen on the morning 

 of the 26th, in lat. 41° 45' N., long. 49° 34' W., and believed to be 

 the southernmost berg. The berg could not be found. The motor 

 ship Hamlet reported having sighted a berg this date in lat. 41° 01' 

 N., lon^. 51° 08' W., and search was begun for it. 



Special ice information was f urnishecf the steamships Seydlitz and 

 President Toft. 



June 28. Li^ht SW. to W. airs and gentle breezes; partly clear, 

 hazy, good visibility. Smooth sea. The forenoon was given over to 

 a search for the small berg which had engaged our attention on the 

 afternoon of yesterday, but, as it could not be found, we believed that 

 it had disintegrated. The berg reported by the motor ship Hamlet 

 on the 27th, which was believed to be the southernmost berg, was 

 located at 5.10 p. m., in lat. 41° 57' N., long. 50° 50' W. The sea- 

 water temperatures near this berg were as follows: At surface, 57° 

 F.; 50 meters depth, 40° F.; 125 meters, 35° F.; 250 meters, 37° F.; 

 450 meters, 38° F., and 750 meters, 37° F. The Dutch steamship 

 Alchiha reported that she had sighted a large berg on this date, in 

 lat. 41° 36' N., long. 51° 37' W., but we beheved her position to be 

 in error and that she sighted the berg reported by the motor ship 

 Hamlet on the 27th. We passed this berg (berg "P") several times 

 during the last few days and had noted its rate of shrinkage. Making 

 due allowance for the rise in the temperature of both the air and the 

 sea water, as it drifts to the southward and eastward, it was con- 

 servatively estimated that the berg would probably last a week or 10 

 days longer. A clear, distinct echo from the steam whistle was 

 obtained when we were about three ship's lengths from one of the 

 perpendicular concave sides of this berg. We lay by this berg during 

 the night. From 12.50 p. m. to 2 p. m., a brimant, prismatic halo, 

 42° in diameter, was observed around the sun. 



June 29. At daybreak we ran down to the position of the berg 

 reported on the 25th in lat. 41° 36' N., long. 51° 37' W., but saw 

 nothing of it and returned to the berg we had left, in order to keep 

 a record of its drift and disintegration. At 8 p. m. it was in lat. 41° 

 67' N., long. 50° 55' W. 



