54°35 ' W. The depth of water varied but Httle in the vicinity and was 

 approximately 220 meters. The weather was cloudy and the wind in- 

 creased during the day from force 3 at the beginning of the observations 

 to force 5 at the end. Its direction remained steady throughout from 

 187° true. 



Prior to the beginning of the station work a series of bathythermo- 

 graph casts were made at intervals of a few hundred yards and disposed 

 in the form of two circles of 2,000 and 1,000 yards radius from the berg. 

 The vertical distribution of temperature in these two cylinders about 

 the berg is shown in figures 18 and 19. 



These figures show the degree of horizontal thermal uniformity in the 

 neighborhood of the berg, and as the distribution at 1,000 \ards is 

 essentially the same as that at 2,000 yards, the figures indicate that 

 any significant thermal effects of the presence of the berg were either 

 too small to be revealed by instruments having limits of precision of 

 the order of 0.1° such as the bathythermograph, or were limited to an 

 area of less than 1,000 yards radius from the berg. 



Figure 20. — Surface salinity distribution in neighborhood of berg. Stations, representing points of 

 observation, plotted with reference to berg. 



26 



