DRAFT OF A CLASSIFICATION FOR THE WORLD's FAIR. 675 



246. BuiLDixCi Stonk, Marbles, Slates, etc. — Continued. 



Stoae ready for use for building-decoration, statuary, monuments and fur- 

 niture, in blocks or slabs, not manufactured. 



247. Stoxe Working. Methods and Products. 



Stone breaking, crushing, and pulverizing. 

 Stone-dresser's art. 



Carver's and sculptor's art. (From mechanical side.) 

 Lapidary's and gem-cutter's art. 



248. Masonry. (See also Construction.) 



Stone and brick laying in mortar, etc. 



Stuccoing and plaster molding. 



Construction of concrete and other roads and pavements. 



249. Mosaics and Ornamental Stonework. 



(See Department 7.) 



25. Coal, Petroleum, and Gas. A Comprehensive Monographic Exhibit. 



250. Historical Exhibit of Mineral Combustibles and their Uses. 



2.51. Chemistry and Geology of Coal, etc. 



2.52. The Coal Mines. 



253. The Petroleum Region. 



History of petroleum. 

 Methods of exploitation. 

 Transportation and consumption. 



254. Natural Gas. 



A monographic display. 



255. Illuminating Gas and its Manufacture. 



256. Bitumens and Asphaltums. Tars. 



257. Peat, etc. 



258. The Applications of Coal, Petroleum, etc. — A Monographic Display. 



The objects to be shown here for a special purpose in limited number will, 

 of course, be shown elsewhere in their customary relationships. 



259. Commerce in Coal, Petroleum, and their Derivatives. 



Historical and statistical data showing relations of coal and petroleum to 



all the arts of civilization. 

 Prices. Routes of traffic, etc. 



26. Exploitation of Water and fee and other Surface Deposits. 



261. Water Supply. 



Springs and fountains. Utilization. RetrospectiA'e exhibits. 



Cisterns and storage tanks. Other receptacles. 



Artesian wells. Pumps. Well apparatus. 



Water supply (independent of engineering and sanitary considerations). 



Dams, aqueducts, sluices. 



262. The Ice Industry. 



Harvesting ice. Tools and methods. Pictures. 

 Ice storage. Ice supply. Methods and statistics. 



Ice manufacture, refrigerators, cold storage, etc., may possibly be conven- 

 iently shown in this connection, 



263. Mineral Waters. 



Geographical distribution. Chemistry. 



Sources. Exhibits of special springs, with pictures, etc. 



Methods of bottling, etc. Transportation, prices, markets, 



264. The Sai,t Industries. 



Salt springs and ev%noratiug works. 



