section. The success of the different varieties of building stone. In the rear of the of Chicago. A collection of crystals. to illustrate central room is an exhibit of American coal, with erystallography has been sent by the Field Columbian Skiff, who has general charge of the United States… … photographs from various mines. The Iron Age Li- Among the great profusion of specimens may be PAVILION OF AMERICAN STEEL AND WIRE COMPANY. brary contains a collection of all the catalogues relat- noted a large block of magnetite, a collection of nickel ing to the industry, and next to it is the…
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