640 



THE WORLD S WONDERS. 



-sledge by means of a single trace attached to a breast-strap, but 

 instead of becoming entangled in running, a dozen dogs to a single 

 sledge will spread out in fan-shape and thus keep their traces 

 from fouling. The outside worker thinks his place is harder 

 than any other, so, after pulling in that position for a time, as 

 he considers it his duty to do, the outside dog will slack up and 

 skillfully run under several traces and reappear near the centre 

 of the group, without having created the least confusion. 



Every pack of dogs has a boss, or king, usually the largest and 



LIEUT. SCHWATKA'S SLEDGE TRAVELING OVERLAND. 



fiercest among them, who takes upon himself the duty of regu- 

 lating the conduct of all his comrades. This ruler is never lazy, 

 and sees to it that, while traveling, none of his subjects shirk 

 their work. He keeps his eyes about him, and whenever he dis- 

 covers a dog slacking his trace too much, the king jumps on him 

 and administers such a sound thrashing, that it is rarely neces- 

 sary to repeat it. Around the camp, too, this dog-king exacts 

 obedience and will not permit an unnecessary amount of fighting. 

 When there is more than one pack of dogs in camp, each keeps 

 strictly to itself, for if one dog ventures to visit another pack, he 



