536 THE POPULAR SCIENCE MONTHLY 



Fig. 2. Bird's-eye View or the Toom'-pin Wr-NEAr/ Tu-weap' looking to the Northeast, 

 showin?; the Sierra la Sal on tlie Riijht, tlie Cafions iIhoul-Ii the C'cture, and Lines <>/ Clifls on 

 the Leit, 



