()7fi REPORT OF NATIONAL MUSEUM, 1891. 



264. TnK Salt Ixdustriks — Continued. 



Sea salt. Natural evaporating basins, and artiticial methods, as on Cape 



Cod. Methods, statistics and history. 

 Salt mines. Metliods, tools, products, trade, etc. 

 26.5. Phosphate and Maul Ixdustriks. 



266. The Gi'ano Islanus. 



History, statistics, methods and product 



267. Amber Dredging. 



Monograpliic exhildt. 



265. Sano oi' Sea and River and other Strand Workings. 



269. StTLPHUR, P^ARTHS, ClAYS AND SaLTS, NOT ELSEWHERE CLASSED 



Monographic exhibits of each industry. 



27. Metallurgical Products.* 



270. Precious Metals. 



Examples in various stages, not shown elsewhere 



271. Iron and Steel. 



In the pig, ingot and bar. 



Plates and sheets. 



Specimens of slags, fluxes, residues, and j)roduct3 of working. 



Edge tools. 



272. Copper. 



In ingots, bars and rolls. 



Specimens showing stages of jiroduction. 



273. Lead, Zinc, Antimony, Aluminum, p:tc., the Result of Extractive Proc- 



esses. 

 Illustrations of manufacture and products. 



274. Alloys used as Materials. 



Statuary, l)ronze, gun, bell and speculum metal. . 

 Brass, and alloys used as a substitute for it. 

 White alloys, .as Britannia metal, German silver, pewter, etc. 

 Type metal, sheathing metals, and other alloys. 

 Babbitt or anti-friction metals. 

 275. 



276. Products of the Working of Crude Metals. 



Castings, bells, etc. 



Commercial iron. Special kinds of iron. Architectural iron and railroad 



iron, etc. Plates for sheeting and construction. 

 Sheet iron and tin. Sheet iron coated with zinc or lead. 

 Copper, lead and zinc sheets, etc. 



277. Wrought Materials. 



Forge work. 



Wheels and tires. 



Chains. 



Un welded pipe. 



378, Products of Wire Drawing. 



Needles and pins. 



Wire rope. Wire in general. Barbed an<l other fence wire. Wire gauzes, 

 lattices. Perforated iron. 



379. Miscellaneous Products of Metal Working. 



Tin-ware of all kinds. 



Sheet-iron work. 



Copper sheet and its applications. 



Wrought and forged Avork not elsewhere classed. 



*ror products of the metal-working arts, see Class 46, 



