BELMONT COUNTY. 549 



and of his foreman, I selected a representative sample of the stone, 

 which was analyzed by Prof. Wormley, with the following result : 



Silicious matter 29.80 



Alumina, with trace of sesquioxide of iron 13.80 



Carbonate of lime 41.20 



" magnesia 15.36 



Total 100.16 



In a business prospectus issued by the Messrs. Parker I find the follow- 

 ing analysis of the cement limestone, made by Dr. E. S. Wayne, of Cin- 

 cinnati : 



Carbonate of lime 72.10 



magnesia 11.15 



Silica 8.47 



Alumina 4.85 



Iron 3.10 



Loss and moisture 0.33 



Total 100.00 



This result is so entirely different from Dr. Wormley's analysis that I 

 am led to believe that, by some accident, Dr. Wayne was not furnished 

 with a representative sample of the proper cement rock. There can be 

 no doubt that, theoretically considered, the sample analyzed by Dr. 

 Wormley is the better stone for a hydraulic cement. The Messrs. Par- 

 ker make, on an average, eighty barrels of ground cement a day, each 

 barrel containing two hundred and eighty pounds. The works have a 

 capacity for one hundred barrels a day. Coal for burning the lime and 

 for generating steam for grinding the cement is obtained from the lower 

 Barnesville, or Bellair seam, opened in the vicinity of the works. The 

 manufacture of cement was commenced by Mr. T. C. Parker in 1858, and 

 continued until the beginning of the war, in 1861. It was resumed suc- 

 cessfully in 1868. The cement has a high reputation, and was used with 

 approval in the construction of the great railroad bridge over the Ohio 

 River at Bellair. 



The coal from both upper and lower Barnesville seams is used, and 

 numerous mines are opened in the many valleys in the township. A 

 shaft has recently been sunk near Barnesville, to reach the upper seam. 

 This is for convenience chiefly, in order to save the expense and trouble 

 of bringing the coal to town from the neighboring valleys. The lower 

 seam furnishes a more resinous and cementing coal than the upper, but 

 both coals are of fair quality. For the generation of steam, for house- 

 hold use, for rolling mills, and, indeed for the great majority of uses, the 

 coals are valuable, and the supply is practically inexhaustible. 



