SCIENTIFIC RESULTS 



113 



The ])roeesse.s of disinteo;rati()n are best observed at sea near the 

 southern melting end of the berg's journey, and for this reason the 

 ocean south of Newfoundland provides an excellent region to carry 

 out such studies. 



The Rugged Surface of Recent Calvings 



FiGUKE 7y. — A tower of ice 150 feet high which the international ice patrol observed 

 jjrounded on the Tail of the Grand Banlf in 1922. When approached within a mile 

 or less, a hersr of this size creates a distinct feeling cf impressiveness. The photo- 

 graph also strikingly reveals the planes of cleavage from which tons of ice have 

 calved. The proportions of exposed to submerged bod.v of pinnacled l)erg, the 

 group in which this one is classed, is 1:1. (Official photograph, international ice 

 patn I.) 



Melting processes are always at work on all bergs, but they 

 are slowest in winter and when the berg is far north or on the conti- 

 nental shelf. Wastage speeds uj) during the warmer months and as 

 the ice drifts fartlier and farther south into the open Atlantic. If 

 the water is waiiucr tliau the air, a coudition sometimes met in early 



