



ystems of 

 plift stimulat 



. 



s (the I by prod 



nbling 



EXPLANATION OF PLATE XVI 



A HANGING VALLEY, FRASER REACH 



Fraser Reach is a long, deep channel, or fiord, of the ' Inside Pas- 

 sage,' here about two miles wide. The hanging valley is in Princess 

 Royal Island, and joins the fiord trough from the southwest. Its sill 

 is several hundred feet above the water surface. 



From a photograph made by E. S. Curtis, June 3, 1899. Negative 

 NO. 187. 



58) 



prc 



the p 



he prt 



stream :nctio 



at /. o< tnd FB is the 



ag of the raiiin trough by tli 



