150 SOUTHERN BORDER OF CENTRAL COAL FIELD. 



was observed outcropping on the side of the hill. It was then traced along 

 the outcrop southeastward for three miles or more, and the quality found to 

 be about the same all the way. This is the same stone found in Hill's pasture, 

 a little northeast of the Sulphur Spring on the Colorado, the horizon being 

 readily determined by the similarity of the surrounding rocks. 



In the bed of Cherokee Creek there is a dark limestone, with small frag- 

 ments of coal outcropping in the side of the bluff. The coal is of no com- 

 mercial value, and there is no probability that it will be better if traced to 

 another locality. 



At Simpson Creek, two miles south of the town of San Saba, the same 

 blue limestone that is seen below the black shales at McAnnelly's Bend was 

 found, and also at the spring at the town. In this blue limestone, just east 

 of the spring, is found a stratum containing the same coral as the limestone No. 

 4 of the section made on the Colorado just west of Bend, and also north 

 of Cherokee Creek. On the north side of the San Saba River, one mile 

 north of the town, there is another exposure of the black shales, which are 

 here 30 feet thick, with identically the same fossils as found at Bend. From 

 a trip up the San Saba River, from San Saba to near the mouth of Brady 

 Creek, careful observation seems to indicate that the river runs most of the 

 way along the strike of these black shales. One mile northeast of Doran's 

 Ranch house, near Brady Creek, there is another outcrop of black shale be- 

 tween the limestones, which is evidently the same stratum as that found be- 

 tween the limestones at Bend. Again, on the south side of the river, and a 

 half mile south of the ranch house, there is a bluff of 60 feet in height, show- 

 ing strata of blue limestone and shale, very much resembling the strata at 

 Indian Bluff, in Lampasas County; the only difference being that at this 

 place the layers of limestone are somewhat thicker. Underlying this is a bed 

 of massive limestone that in places has been changed to marble. There is 

 also a similar bluff on the north side of the river, half a mile west of the 

 ranch house. The river cuts through these strata, and also through the mas- 

 sive limestone, which continues to be visible to the mouth of Brady Creek. 

 In the massive limestone, about half a mile below the mouth of Brady Creek, 

 there is a fissure crossing the river at an angle of north 30 degrees east, filled 

 with carbonate of iron and iron pyrites. The vein cuts the bluff on the north 

 side of the river, and can be traced by the iron outcroppings for several 

 miles. It was traced very readily across the hill for more than half a mile, 

 and seemed to contain about the same amount of iron all the distance. The 

 vein is from one to two feet wide. 



Along the G-oldthwaite road, north of San Saba about six miles, there is a 

 hill 60 feet high capped with the Carboniferous sandstone. The bottom of 

 the hill is composed of bluish and yellow clay shales, on the top of which is 



