624 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. [3] 



Coke. 



The manufacture of coke at Connellsville, Pa. : Collectiou from the 



H. C. Frick coke ovens. 



Sulphur. 



The manufacture of sulphuric acid from iron pyrites : Collection from 

 the Merrimac Chemical Company, Boston, Mass. 



The manufacture of alloys. 



Brass and its utilization : Collection from the Ansonia Brass and 

 Copper Works, Ansonia, Conn. 



Type metal and its utilization : Collection from the type foundry of 

 Mackellar, Smiths & Jordan, Philadelphia, Pa. 



Babbitt, or anti-friction metals : Collections from Merchant & Co., 

 and Paul S. Reeves, Philadelphia, Pa. 



Solders : Collection from Merchant & Co., Philadelphia, Pa. 



COLLECTIONS ILLUSTRATING THE PRACTICAL APPLICATION OF NON- 

 METALLIC ORES. 



The manufacture of sand-paper : Collection from Baeder, Adamsom 

 & Co., Philadelphia, Pa. 



Asbestos and its application : Collection from the H. W. Johns Com- 

 pany, New York. 



Abrading and polishing materials : Collections from E. J. Waddell 

 & Co., New York, and Saint Louis Tripoli Company, Saint Louis, Mo. 



The utilization of barites : Collection from Page & Krause, Saint 

 Louis, Mo. 



Washington, D. C, December 14, 1884. 



