1894.] NATURAI. SCIENCES OF PHILADEI^PHIA. 67 



whicli it resembles, we examined the bluffs for a day and a half 

 for fossils. They are rare in that region, but I obtained on the sec- 

 ond day, teeth of both series of a horse, Equus cwniiiiiisii Cope, 

 which demonstrated at once that the age is the Blanco. Mr. Brown 

 found camel bones which approach in dimensions those of the Blanco 

 species, rather than those of the Loup Fork ; but the species could 

 not be identified. 



On the succeeding day, we drove, thanks to Mr. R. T. Cole, ot 

 Mobeetie, to the town of Mobcetie in Wheeler County, eighteen 

 miles S. E. of Miami. The route takes the traveler across a part of 

 the Staked Plains, and a considerable distance before Mobeetie is 

 reached, ravines belonging to the drainage system of the tributaries 

 of the Red River are passed. We examined a number of these for 

 considerable distances without obtaining fossils. As we passed the 

 deserted Fort Elliott, near to Mobeetie, I examined some sandy beds 

 like those of the Upper Blanco beds, and obtained additional tooth 

 fragments of Equus oummhml and a second species of Equus proba- 

 bly E. eunjstylus, and fragments of teeth and other bones of unde- 

 terminable camels. We thus determined the extension of the Blanco 

 bed as far east as Mobeetie. 



The result of my observations on this, the northeastern border of 

 the Staked Plains, is to the effect that this plateau to the north of the 

 Red River like that part to the south of it, belongs to the Blanco de- 

 posit, giving the latter a north and south extent of two hundred and 

 fifty miles. It had been liitherto positively determined at the typical 

 locality only, that distance south of Miami, on the upper waters of 

 the Brazos. From this point to the Red River the formation appears 

 to be continuous ; and the portion north of the Red River now 

 described, not only has a close physical resemblance to the portion 

 south of it, but contains as now appears, fossils of the same age. 

 (See Report of the Geological Survey of Texas for 1892, lor reports 

 by Cummins and Cope on the Blanco terraue). 



On our return from Texas, Ave stopped at Tucker, Oklahoma, near 

 to the Cimarron River, and examined for a day the exposures and 

 bad lands ot the Upper Permian of that region. Although the ex- 

 posures are most favorable for the exhibition of any fossils whicli the 

 strata may contain, nothing of oi'ganic origin was found. Crystallized 

 gypsum is very abundant. 



On reaching Kansas on our return, we stopped at Wellington and 



