U. S. GEOLOGICAL SURVEY BULLETIN 845 PLATE 22 
A. MAGUEY (AGAVE PARRY] 
Abundant on r y limestone hills in the Southwest. About 7 years 
is required for as velceiens nt, after which it dies. Allied species are 
the source of the Mexican drinks mescal and pulque. 
im 
ie a NE te ae ~ 
Pee = en ee 
= 
B. PICACHO, A NOTABLE LANDMARK NEAR W YMOLA, ARIZ. 
A mass of yolcanic rock of Tertiary age, Looking southeast. 
