512 GEOLOGY OF NORTHWESTERN TEXAS. 



The farthest point east in Jack County at which I saw the coal outcrop was 

 near the residence of Mr. W. N. Cooper, on the northeast quarter of section 

 No. 2, made for the Texas and Pacific Railway, file 2379. The following 



section was made at that place. Beginning at the bottom: 



I 



1. Blue clay 10 feet. 



2. Coal and shale 2 feet. 



3. White fine clay . 8 feet. 



4. Blue clay 1 feet. 



5. Rough sandstone 6 feet. 



Total 33 feet. 



About one-half mile west of Cooper's house, in a ravine near the road, 

 there is another outcrop of this seam of coal. At this place a tunnel has been 

 driven into the side of the hill about twenty feet. The coal at this place is 

 too thin to be of any economic value. 



About three-fourths of a mile west of Cooper's, at a point on the hill near 

 the Henrietta and Jacksboro road, this same seam of coal is found outcrop- 

 ping again. About one-half mile southwest of the last named place there is 

 another outcrop of this same seam. At all of these places the coal is too thin 

 to be of any value. It is perfectly useless to expect to get better coal or a 

 better seam by following the seam under the hill. A better place would be 

 one-half mile northwest of there, where the seam passes under a ridge of high 

 hills. 



Another outcrop is near the west line of the R. 0. W. McManus survey, 

 just north of the residence of Mr. F. M. Sloan. At this place the coal may 

 be traced by its outcrop for some distance in a northwestern direction. It is 

 too thin to be of any economic value. 



About one mile west of Sloan's house is another outcrop of the same seam. 

 This seam may be traced by its outcrop for a mile northwestward from this 

 last named place. The dip of the seam*at all these places is to the north- 

 westward and towards a range of high hills. If it shall be found that the 

 coal becomes thicker as the seam is traced away from the outcrop in the di- 

 rection of the dip, then there will be sufficient covering to prevent atmos- 

 pheric influences from injuring the coal before it is taken out; and it is pos- 

 sible that the coal may thicken up in that direction, yet I have seen noth- 

 ing that would lead me to definitely determine that it would. A shaft or two 

 would determine this matter very certainly. A diamond drill that would 

 bring up a core would give a very good idea of the matter if it was run by 

 reliable parties, or by parties who were competent to determine what coal 

 was when they saw it, and were reliable enough to make a report of the facts 

 as they were found. 



