BULL. GEOL. SOC. AM. 



VOL. 14, 1902. PL. 45 



Figure 1.— Boaks Tusk— A Volcanic Nkck 

 As seen from northeast. The distant mesa is the escarpment of Green river shale, on which rests Pilot mesa 



Figure 2. — Boars Tusk 

 As seen from JIatthew hill and at a distance of one mile. 



BOARS TUSK 



