REPORTS OF GEOLOGISTS. CI 



wood, and thence southward along the upper or western San Saba road to the 

 town of San Saba, where we reached the base of the formation in this part 

 of the State. We then turned eastward along the strike of the San Saba 

 Sandstone to the head of Lynch Creek, in Lampasas County, and thence to 

 the town of Lampasas, where the survey practically ended. 



The outfit was sent to Austin, where the wagons and camping outfit are 

 stored and the horses and mules properly cared for. 



At this place I will briefly refer to a few facts which will be presented in 

 greater detail in the body of the report herewith submitted. 



In the brief time which I had for the examination of the beds in the vicin- 

 ity of Dockum, and which in the First Annual Report, 1889, 1 called the 

 Dockum Beds, I could not get enough material by which to definitely deter- 

 mine the horizon to which they belong, but am of the opinion that they are the 

 same as the Shinarump beds of Hay den, a member of the Triassic formation 

 in Arizona. The beds constituting the upper part of the Staked Plains are 

 of a later date, and are without doubt Tertiary. In these I found only frag, 

 ments of vertebrates, and not enough to definitely determine the horizon to 

 which the beds belong. A more detailed examination of that part of the 

 country is required to determine any of the stratigraphic relations. 



I still see no cause for changing my opinion that all the strata from the 

 Coal Measures to the Dockum Beds belong to the Permian. I think this will be 

 fully proven by the facts collected on this expedition, as will be shown in the 

 body of the report. I have made as large a collection of fossils from the several 

 beds as it was possible to make in the time at my disposal for such purposes. 



The two complete sections made across the Carboniferous, one along the 

 Brazos River and the other along Pecan Bayou, have enabled me to correlate 

 the strata of the Carboniferous south of the Cretaceous belt that extends 

 across the country just below the Texas and Pacific Railway with the beds in 

 the northern part of the State. 



The highest and lowest beds of the Carboniferous occur in the southern 

 part of the field, while only the intermediate ones are found in the extreme 

 northern part. 



Both the workable beds of coal are in the northern division, while only No. 

 7 is found in the southern division. 



The relation of the several beds will be shown in the body of the Report. 



Mr. N. F. Drake has been in charge of the topographic work, and to his 

 efficiency in that branch of the service, and in making observations of the 

 stratigraphic relations of the different beds, I am indebted for the complete- 

 ness of the sections published elsewhere in the Report. 



W. F. CUMMINS, 

 Geologist for Northern Texas. 



