JEFFEESON COUNTY. 745 



and 4 of section) are used as a mixture in the manufacture of sewer pipe. 

 The principal supply of clay comes, however, from below Coal No. 3. 



Dr. Garlict has an extensive terra cotta and drain-pipe factory, for 

 which the raw material is obtained from the fire-clay of the "Clay 

 seam," and he has now the largest stock of such things as he manufac- 

 tures to be found on the river. The principal articles made here are 

 drain-pipe of all sizes from two inches to thirty-three inches in diameter, 

 terra cotta chimney tops, vases, etc. 



The upper coal (No. 7) is clean and bright, mines in blocks, and is o^ 

 better quality than the seam next below it. It is now not much used, 

 as it costs more than the other. Coal No. 6 is very black and smutty, 

 contains considerable sulphur, and has some "bony" coal in the lower 

 bench. It costs two cent^ per bushel delivered at the works. The coal 

 found beneath the "Roger seam," at Freeman's, has not been detected 

 here. Its position is, however, indicated by a line of springs. Coal No. 4 

 has been opened, but, being only eighteen inches thick, is not worked. 

 The coal taken from this seam is very hard, and burns well, but leaves a 

 red and rather copious ash. Coal No. 3 has its usual sulphurous character, 

 and is not mined. Analyses of the coals and clays of Elliotsville will be 

 found in the tables given at the end of this chapter. 



At the Excelsior Wgrks, Coal No. 3 lies just above the railroad; at 



Garlick & Sizer's, seven hundred and twenty- eight feet south, it is from 



seven to ten feet below — showing a southerly dip of about one foot in a 



hundred. 



ceoxon's run. 



At Croxon's Run are extensive factories which formerly produced fire- 

 brick of good quality, but they are not now in operation. The following 

 is a section of strata found in the hills here : 



Section at Croxon's Eun. 



1. Slope, with black shale at base. 



2. Coal No7, quality good 3^ feet. 



3. Interval, showing shaly sandstone where rook is exposed.. . 77 feet. 



4. Black shale 18 feet. 



5. Coal No. 5, good quality 34 inches. 



6. Fire-clay, thin. 



7. Limestone 2 feet. 



8. Sandstone 80 feet. 



9. Gray shale ti to 8 feet. 



10. Coal No. i 28 to 30 inches. 



11. Argillaceous shale 15 feet. 



12. Coal No. 3 36 inches. 



13. Clay, used for fire-brick 7 feet. 



14. Sandstone to Croxon's Run. 



