242 REPORT OF NATIONAL MUSEUM, 1884. 



A collection of the Mossy Creek, Tennessee, zinc ores. Presented by 

 T. H. Heald, Knoxville, Tenn. 



A series of collections representing the mining of iron pyrite and the 

 manufacture of sulphuric acid therefrom. The Virginia pyrite, pre- 

 sented by W. H. Adams; the Massachusetts pyrite, presented by the 

 Davis Company, of Boston ; and the manufacture of sulphuric acid, 

 presented by the Merrimac Chemical Company, Boston, Mass. 



A very large and interesting collection of Babbitts, solders, and other 

 alloys, and also a series of the various grades of Welsh tin plates, together 

 with descriptions of the manufacture. Presented by Merchant & Co., 

 Philadelphia, Pa. 



A very interesting collection representing the growth and present 

 condition of the process for the manufacture of type metal. Presented 

 by Mackellar, Smiths & Jordan, Philadelphia, Pa. 



A full collection of Babbitt and similar alloys. Presented by Paul 

 S. Beeves, Philadelphia, Pa. 



A series of Ajax metal specimens for bearings, &c. Presented by the 

 Ajax Company, Philadelphia, Pa. 



A very interesting collection representing the manufacture of sand 

 and emery paper. Presented by Baeder, Adam son & Co., Philadelphia, 

 Pa. 



A very large and complete collection representing the occurrence of 

 asbestos from various countries and its manufacture into marketable 

 forms. Presented by the H. W. Johns Company, New York. 



A collection of various polishing materials. Presented by B.J. Wad- 

 dell & Co., New York. 



A collection of corundum, emery, and quartz of various sizes. Pre- 

 sented by the Union Stone Company, Boston, Mass. 



A valuable collection of drawings representing the application of the 

 Siemens regenerative principle to various kinds of furnaces. Presented 

 by Bichmond & Potts, Philadelphia, Pa. 



A collection representing the application of the diamond drill in 

 boring, especially for prospecting purposes. Presented by the Penn- 

 sylvania Diamond Drill Company, Pottsville, Pa. 



A small but interesting collection of tin ores from Maine and North 

 Carolina. Collected by Prof. F. W. Clarke, U. S. Geological Survey. 



A complete series representing the Connellsville coking coal and its 

 associates, together with coke of various grades. Presented by the H. 

 C. Prick Coke Company, Pittsburgh, Pa. 



Mr. James Temple Brown, of the Museum staff, made the following 

 collections: 



A complete series representing the manufacture of miners' boots. 

 Presented by Humphrey Brothers & Tracy, Towanda, Pa. 



A complete series of the domestic sizes of anthracite coal, together 

 with its associates; also an extensive series of mining tools, &c. Pre- 



