15 



as depicting a current pattern which the wind has had a major role in 

 setting up. When once estabhshed the current is the stronger in 

 affecting such deeply immersed objects as icebergs but this should 

 not mean a total disregard of the wind effect, which has been shown 

 above to be, at times, large. 



47' 



52° 



50° 



49' 



48° 



Figure 4.— The observed drift of an iceberg from July 2 to 19 plotted against the stream ] 



map completed July 3. For explanation of symbols see figure 2. (See text.) 



There are several striking examples of the importance of wind in pro- 

 longing an ice season or changing its character. While it is admitted 

 that these effects are probably secondary they are sometimes the 

 added weight which tips the balance. On June 9 in 1935 the Patrol 



