IJKPORT ON THE DEPARTMENT OE METALLUROY AND ECONOMIC 

 (iEOLOGY IN THE U. S. NATIONAL MUSEUM FOR THE YEAR END- 

 ING JUNE 80, vmi 



By Fred. P. Dewey, Curator. 



During the year 175 accessions were received. Of these, 42 were col- 

 lections gathered by the curator at the, New Orleans Exposition, which 

 were fully described in the hist annual report, but which were not re- 

 ceived in Washington in time to be accessioned until after the first of 

 July, 1885. Of the remaining 13;3 accessions a very large number were 

 specimens sent in for examination and report, and have no value what- 

 ever to the Museum. Only 7 of the accessions are of sufficient impor- 

 tance to be especially mentioned. These are: 



A small but very interesting and valuable collection representing the 

 occurrence and associates of iridosniine, presented by Mr. A. D. Walcott, 

 Randolph, Oregon. A small collection representing the occurrence of 

 free silver in the P.atopilas region of Mexico, collected by Dr. Edward 

 Palmer, of the Smithsonian Institution. A small collection represent- 

 ing the appHcation of the Pussell leaclnng process for the extraction of 

 the precious metals as applied to the ores of Lake Valley, New Mexico, 

 presented by Mr, F. W. Taylor. A very full and interesting illustra- 

 tion of the occurrence, extraction, and uses of aluminum, presented by 

 (y()l. William Frishmuth, Philadelphia, Pa. A full series of photographs 

 ol' microscopic; sections of iron and steel, presented by Mr. F. L. Garrison, 

 Philadelphia, Pa. A series of English cokes from various localities and 

 r('])resenting different processes of manufacture, presented by Mr. Ilenry 

 Simon, Maiiclicster, l^iUgland. The vei-y large collection [)rescnted to the 

 Museum by the American Institute of Mining Engineers. This collec- 

 tion is espeiMally ri<;h in illustrations of the Americian iron industry, the 

 ores of Missouri, and of foreign ores and metallurgical i)ro(;esscs; it will 

 be more fully described in the historical sketch of the department. 



In cataloguing the collections, 5,500 entries, covering 8,233 si)ecimens, 

 have been made. Besides the 175 accessions received during the year. 

 29 ac(;essions, previously received, have been entered. This material 

 may be divided as follows: From the New Orleans Exposition, 70 ac- 

 cc^ssions, 2,422 entries, and 3,233 specimens ; American Institute of Min- 

 ing pjiigineers, 1 acc-ession, 2,(»H; entries, and 4,230 s])ecimens ; miscella- 

 neous, 127 accessions, 408 entries, and 704 specimens. 



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