U. S. GEOLOGICAL SURVEY 



nULLETIX 707 PLATE LXII 



A. GRAND HOGBACK. 



View of the Grand Hogback where it is trenciied by Colorado River at Newcastle. Old dump 

 heaps show where coal has been mined, but all the mines have been abandoned. The Wheeler 

 mine, at the extreme right, was abandoned on account of fire, and the coal is still burninfr. In 

 this hill the workable coal beds have an aggregate thickness of 109 feel. Photograph by Hoyt S. 

 Gale. 



li. PALM-LEAF FAN GROWN IN COLORADO. 



Long ago in geologic time palms grew luxuriantly in all parts of Colorado, and the coal miners 

 about Newcastle when they want a fan merely quarry one out of the rock. Here is a group 

 of miners and a fossil palm-leaf fan they have just found. Photograph by Hoyt S. Gale. 



