On May 16 wc arrived at St. John's Newfoundland, for fuel and 

 supplies, having scouted along the eastern slope of the Grand Banks 

 to their northern limits and thence westward. The scouting was 

 somewhat impaired by dense fog and low visibility prevailing since 

 May 12. During this patrol a total of 1,970 miles was cruised in 

 the search for ice. Temperature reports to the number of 356 were 

 received from ships, and surface temperatures were taken every hour 

 from the General Greene. These data and the track of the General 

 Greene have been plotted on the chart, isotherms drawn in the usual 

 way, see Figure 24. 



FOURTH CRUISE, MAY 23 TO JUNE 12, 1931 



The General Greene stood out of St. John's, Newfoundland, at 

 9.30 a. m., May 23, on the fourth ice-observation cruise. At 9.50 

 a. m. a course was set for a position 32 miles east, true, from Cape 

 St. Francis. A small berg had been reported in that vicinity by 

 Cape Race radio station the previous day, during the in-port period of 

 the General Greene. We scouted the area thoroughly without locating 

 the berg. Calm to light variable airs, smooth sea, and good visibility 

 prevailed. 



At 1.51 a. m.. May 24, dense fog set in which considerably curtailed 

 ice-scouting operations. During this period of low visibility the 

 General Greene drifted on the northern limits of the Grand Banks, 

 except during such times as the visibility improved to such an extent 

 as to make ice-scouting practicable. On these occasions scouting was 

 resumed eastward along the northern slope of the Bank. Whenever 

 the run of these periods of increased visibility effected a change of 20 

 miles or more in position, oceanographic stations were taken while 

 drifting during the following periods of low visibility. At noon May 

 27, the weather being too rough to drift, we got under way and hove 

 to in a southwest gale that had been making up since early morning. 

 At 9 p. m. the wind moderated and hauled to the westward with 

 clearing weather. Whereupon we resumed scouting operations 

 southward along the eastern slope of the Grand Banks. 



On May 30, having completed scouting the northern and eastern 

 slopes of the Grand Banks as far south as latitude 42° 53' N., we stood 

 westward across the Tail of the Banks to longitude 51° 09' W., and 

 thence northward across the center of the Grand Banks. At 2 p. m. 

 this day Cape Race radio station reported a large berg in latitude 47° 

 14' N., longitude 51° 51' W. The position of this berg was practically 

 on the proposed track of the General Greene, so we continued north- 

 ward on our course, raising the berg at 9.40 a. m. May 31. 



At 11 a. m., when we arrived close to the berg, it slowly started to 

 capsize, completing this movement in approximately five minutes. It 

 changed from its original position through an arc of 90 degrees, com- 



