672 REPORT OF NATIONAL MUSEUM, 1891. 



DEPARTMENT 2. —THE MINES AND METALLURGY. 



20. Economic Geology and Mineralogy, and the History of Mines, Etc 



201. Geo(;i{ai'hical Di.stkihution <>k Mineral Deposits. 



Ma|t8, veliet'-models, and pictures to illustrate the resonrees of countries and 

 regions, the location of mines and mineral localities; to illustrate specific 

 mines and deposits. 



Treatises on general resources of regions, and on special mines and deposits. 



202. FuKM OF MiNEKAL DEPOSITS. MiNEUAL STRATIGRAPHY. 



Sections — graphic and stereographic — to illustrate veins, their location and 



character. Strata and beds, oils and gas layers, water layers. 

 Pictures of mines, tinarries, and workings. 



203. CUARACTKK OF MINERAL DEPOSITS. ECOXOMIO MINERALOGY. 



Collections of minerals arranged topographically — to illustrate the resources 

 of regions ; to illustrate the character of si)ecial deposits ; arranged system- 

 atically ; to show the present state of knowledge; for comparative study of 

 local resources. 



Analyses of special deposits. 

 201. Rock Deposits, etc. Distribution, 1\)km and Character. 



Quarries, beds, etc., illustrated by maps, sections, pictures and literature. 



Collections of rocks, arranged stratigraphically, to illustrate location of 

 deposits; arranged by regions ; arranged systematically ; arranged to show 

 })ossibilities of application. 



Collections of other non-metallic mineral substances. 



205. Metalhrgical Chemistry and Physics. 



Methods and results to l)e shown from standpoint of direct value to the 



industrial arts. 

 Historical exhibit to show the importance of these sciences to the arts of 



mining and metallurgy. 



206. Petrography and its economic Application. 



Methods and results, as in Class 205. 



Microscopic structure of rocks, shown by slides, etc. 



Tests of strength find resistance power of building stones, with machinery. 



Tests of durability, weathering, etc., with examples. 



207. History of Mines and Minini;. 



Prehistoric mining in Europe and America. 



Early commerce in metals. 



Specimens of primiti\'e tools and products. 



History and relics of special mining enterprises, and their relation to the 



history of civilizat-ion, c (/., the gold mines of California, the dianiond 



mines of Africa, etc. 

 Retrospective exhibits of all kinds. 

 Literature and statistics. 



208. Mining Commerce. 



Markets and centers of consumption, past and juesent, 



Storage methods. Piling coal, etc. 



Prices, past and present. Duties, etc. 



Transportation routes and methods. Expoit and import. 



Petroleum, pipe-lines, etc. 



209. Mining Sanitation and Life-saving Methods. 



(See also Class 865.) 



