TRAVEL. 



65 



All ravines take their origin in the general level. 

 At their heads they have cut but little, and going up all 

 ' divides ' reach the summit, or ' principal divide.' Here, 

 however, commences the trouble. ' Going down ' is 

 entirely different from ' going up ;' for while in going up 

 all the ' divides ' lead to one and the same end, 4 going 

 down' is exactly the reverse, and the one surely prac- 

 ticable route or ' divide ' must be selected from hundreds 

 that present themselves, all looking alike, and appearing 

 at the summit equally practicable. The one ' divide ' 

 selected must be the one that separates the tributary 

 ravines of two large tributaries of the main stream. 

 Many times these ravines overlap each other, making 

 the route extremely crooked. 



An examination of the accompanying diagram will 

 show better than any description the advantages and 

 difficulties of travelling on ' divides/ Suppose each 



B 



