CARBONIFEROUS SYSTEM. 153 



take it to be a lower seam than the one in the Gibson shaft on the north side 

 of the Colorado. The dip is to the northwest. The coal was mined from the 

 surface by following the seam from the outcrop to the branch. 



The Finks mine is one-half mile west of the town of Waldrip. The shaft 

 has been put down to the depth of eighty -four feet. In the bottom is a seam 

 of coal twelve inches thick, then a thin parting, then four inches of coal, then 

 a thin parting, and finally another bed of coal twelve inches thick. A tunnel 

 has been driven from the bottom in an easterly, direction for forty feet, and 

 the coal taken out for some distance on either side. Work on the mine has 

 been stopped for the present. 



The following section was made at this mine, beginning at the top. 



Feet. Ins 



1. Purple clay 8 



2. Yellow clay 8 



3. Massive sandstone , 4 



4. Coal 4 



5. Yellowish clay 20 



6. Clay : 17 



7. Limestone 18 



8. Yellow clay 28 



9. Coal 28 



10. Eire clay 12 



A shaft fifty-five feet deep was put down near the river and struck the 

 same seam of coal. 



A section of a hill in Mahoney's pasture, two and a half miles southwest of 

 Santa Anna, gave the same strata as those observed west of the mountain — 

 sandstone on top, with clays and limestone below. 



Below the red clay is a bed of limestone three feet thick, and below that 

 is a bed of reddish clay twenty feet thick. Near Mahoney's house there is a 

 hill showing the same bed of sandstone that is on the top of the hill west of 

 Santa Anna at about half the height of the hill. Above the sandstone there 

 are twenty feet of yellow and purple clays, and a hard limestone eighteen 

 inches thick rests on that. 



In this limestone are again found deposits of a soft material like the diato- 

 maceous earth. 



In the bed of the creek, half a mile southeast of Mahoney's house, there is 

 a bed of bituminous shale 1 8 inches thick, with a bed of blue limestone below 

 it three feet thick. Still further down the creek, to the southeast, there is in 

 a bluff the same bed of limestone, with blue shale below it, which is 20 feet 

 thick. The bottom of the slate was not seen. 



In the valley of Home Creek, in many places, there is a conglomerate 

 composed of the rocks from the surrounding strata. 



