PLATE XXVII. 



Page. 



VVAAGENot'En.\s HiLLi Smith, i-]f. nov 140 



Upper Permian, Double llountain formation, falls of Salt Ooton Creek, Kent County, Tex. 

 ( Enlarged 1 i times. ) 

 Note. — From photo<rraph liy Franklin, Palo Alto. 



202 



