BULL. GEOL. SOC. AM. 



VOL. 19, 1907, PL. 25 



Figure 1. — Limestone Foothills ox east Side op Laramie Mouxtaixs at Horse Creek, 



Wyomixg 



High ridge of Casper formation ; slopes and valley, Chugwater Red beds. Ridge on right is Cloverly 



sandstone ; granite to extreme left 



Figure 2. — Casper Formatiox, 8 Miles Southeast of Glexrock, Wyomixg. Looking South 



CASPER FORMATION 



II 



