Fig. 19. — Rim of a geyser in Upper Fire Hole Basin, 

 Yellowstone National Park. 



a a Cones. i^f) Outlets. 



Fig. 20.— Plan of Grotto Geyser. 



-,s,^n.<^%d^ ^ 



/ i 







/., 



-P^: 



ffi 



I^ 



l-'iG. *21. — (;llobn]ar manses in tii<- ciun r ol tlic. Turban 

 Geyser, Upper Fire Hole Basin. 



