178 



NEW YORK STATE MUSEUM 



some strong binding material form an abrasive surface, that is 

 said to be more efficient for certain classes of work than the 

 natural sandstones and grits used for grindstones and oilstones. 

 Carhorunduim is manufactured only at Niagara Falls. The out- 

 put of these factories for 1902 was 3,741,500 pounds and for 1903 

 was 4,759,890 pounds. 



Oilstone 



About 20 years ago the Labrador Oilstone Co., of Manlius 

 N. Y., quarried stone from a portion of the Portage formation 

 which outcropped on the side of Labrador mountain in the town 

 of Truxton, Onondaga co. This rock was milled and dressed in 

 Manlius. It was a hard, dark blue sandstone of medium coarse 

 grain. It had fair abrasive qualities, but imparted a rough 

 edge ; and did not compare favorably with other stones then on 

 the market. Its sale was extremely limited, and its manufacture 

 was abandoned. 



The Pike Manufacturing Co. of Pike Station N. H. -states that 

 at one time it operated the mill at Manlius, but none of its raw 

 material was quarried within the boundaries of New York State.^ 



Bihliography 

 Garnet 



N. Y. State Mus. Bui. 15. 1895. p. 553-55. 



48th Rep't for 1894. 1895. 1:553-55. 



Bui. 19. 1898. p. 225-26. 



■ 51st Rep't for 1897. 1899. 1:225-26. 



New York at the World's Columbian Exposition. 1893. p. 341-42. 

 Rep't Sup't State Land Sur. for 1896. 1897. p. 133-35. 

 Engineering and Mining Journal. 1897. No. 16. 68:461. 

 Min. Ind. 1901. 10:274. 



1900. 9:299. 



1899. 8:220. 



1898. 7:272. 



1897. 6:20. 



1896. 5:27. 



1895. 4:14. 



1894. 3:19. 



Hooper, F. C. School of Mines Quarterly. January 1894. 16:124. 



^The above history and description of this stone were kindly furnished 

 to the writer by the Pike Manufacturing Co. 



