PRELIMINARY HANDBOOK OF THE DEPARTMENT OF GEOLOGY. 47 



from the North Cornwall furnace, Lebanon, Pennsylvania; the smelt- 

 ing of limonite with coke, by 30 specimens from the Longdale, Vir- 

 ginia, furnace; the smelting of hematite ores with a mixture of bitu- 

 minous coal and coke, by 20 specimens from the St. Louis Ore and Steel 

 Company, South St. Louis, Missouri, and the smelting of fossil ores 

 with coke, by 17 specimens from the Roane furnace, Rockwood, Ten- 

 nessee. 



To the iron collection is added a selected number of specimens show- 

 ing the results obtained by Kirkaldy, of London, in his classic; investi- 

 gation of the mechanical properties of Fagersta steel. 



Manganese ores are specially illustrated by 4 specimens. 



Nickel and cobalt : The mineralogy of nickel and cobalt is illustrated 

 by 4 specimens and the ores by 18 more. These include samples of 

 smaltite from the historic locality of Chatham, Connecticut ; niekel- 

 iferous pyrrhotite from Dracut, Massachusetts, and the Gap mines in 

 Pennsylvania, Canada, Alaska, Norway, and Sweden ; silicate ores 

 from North Carolina, Oregon, and New Caledonia ; arsenides and de- 

 rived arseniates from Missouri and Nevada. The application of the 

 two metals is illustrated by 43 specimens. 



The mineralogy of zinc is illustrated by 33 specimens. Among these 

 are some very fine specimens of crystallized blende from Missouri. In 

 addition to these, the ores are represented by 13 specimens. 



Much blende associated with galena and a little pyrite occurs in a 

 gaugue of chert in southwestern Missouri and southeastern Kansas. 

 The dressing of this material to separate the blende and galena is illus- 

 trated by 29 specimens from the South Side mill, Galena, Kansas. The 

 extraction of zinc is fully illustrated by five collections. The Glendale 

 Works at St. Louis, Missouri, reducing a variety of ores, are illustrated 

 by 22 specimens. The Joplin Zinc Works at West'Joplin, Missouri, 

 smelting the separated blende from Galena, Kansas, are represented by 

 10 specimens. The Rich Hill, Missouri Works, smelting the Joplin ore 

 and using a Siemens gas furnace to heat the retorts are illustrated by 17 

 specimens. The Passaic Zinc Works, Jersey City, New Jersey, are rep- 

 resented by 31 specimens. The^e works treat the complex zinc, iron, 

 and manganese ores from Franklin, New Jersey, and produce spelter, 

 oxide of zinc, and spiegeleisen. 



The mineralogy of tin is represented by a single specimen, but the ore 

 collection includes specimens from nearly every locality in the United 

 States, not excepting the original tin discovery at Jackson, New II amp- 

 shire. All the principal foreign localities are also represented. The col- 

 lection numbers some 50 specimens, and to these are added specimens 

 of metal, reduced from the ores, among them a small bar smelted from 

 the Jackson ore in 1810. This is undoubtedly the "first tin ever 

 smelted in America." 



Antimony is represented by specimens from California, Utah, New 

 Brunswick, Portugal, Australia, and New Zealand. 



