CHAPTER XI. 



ICE AN AGENT IN TRANSPORTING BOULDERS HOW THIS COMES ABOUT 



DR. KANE'S OBSERVATIONS LONG NIGHT IN WINTER AND LONG 



DAY IN SUMMER EXTREME DARKNESS INFLUENCE ON DOGS 



INTENSE COLD EFFECT ON THE SEA. 



IHERE are many things in this world which, 

 up to within a few years back, have been 

 to men a source of surprise and mystery. 

 Some of these problems have been solved by recent 

 travellers, and not a few of them are referable to 

 polar oceans and ice. 



In many parts of our coasts we find very striking 

 and enormously large boulder-stones lying on the 

 beach, perfectly isolated, and their edges rounded 

 away like pebbles, as if they had been rolled on 

 some antediluvian beach strewn with Titanic stones. 

 These boulders are frequently found upon the loose 

 sands of the sea-shore, far removed from any rocks 

 or mountains from which they might be supposed to 

 have been broken; and, more than that, totally dif- 

 ferent in their nature from the geological formations 

 of the districts in which they are found. " Whence 



