The World's Columbian exposition, Chicago, 1893 . mn, which ispolygonal and faced with mir-rors, and the circular row of col-umns supporting the roof of thepavilion. Above the pavilion isa graceful cylindrical shaft ofstaff, endinof in an elaboratelyt/ornamented gilded capital. Thesurface of the shaft is relieved bydark lines of moulding, arrangedin geometrical designs, as shownin the illustration, with little sixcandle-power lamps of differentcolors inserted at frequent andregular intervals. Surmountingthe capital of the shaft is thecrowning feature of the is the great prismaticbul
The World's Columbian exposition, Chicago, 1893 . mn, which ispolygonal and faced with mir-rors, and the circular row of col-umns supporting the roof of thepavilion. Above the pavilion isa graceful cylindrical shaft ofstaff, endinof in an elaboratelyt/ornamented gilded capital. Thesurface of the shaft is relieved bydark lines of moulding, arrangedin geometrical designs, as shownin the illustration, with little sixcandle-power lamps of differentcolors inserted at frequent andregular intervals. Surmountingthe capital of the shaft is thecrowning feature of the is the great prismaticbulb, composed of about 30,000 pieces of cut glass, arranged on astout frame work in the shape of an incandescent lamp. The lampis eight feet high and four feet in diameter at its greatest prisms are made of cut glass and are only three-quarters of aninch in diameter. To place each one in position required the ser-vices of two men, one working inside and one outside of the bulbframe. The frame is made of angle iron and covered with a wire. THE TOWER OP IvIGHT. ELECTRICITY. 323 hood, the shape of an incandescent lamp. The prisms wereattached to the outside of the wire hood, and it took eight men fiveweelcs to construct the bulb. Each prism was fastened with copperwire in order to avoid corrosion, this being the best metal for suchpurposes. The weight of the bulb completed is 1,000 pounds. Thetower is handsome and impressive when not illuminated ; but atnight, with its 5,000 little points of light in red, white ana blue, andthe great bulb, lined with incandescent lamps of ordinary size, flash-ing and scintillating in every direction, the effect is very striking/and beautiful. The lamps on the shaft are wired in such a mannerthat the designs formed by the lines of light can be changed atwill. The tower of light will linger in the memory of the visitoras one of the beautiful spectacles at the Fair. In the German section of the Electricity Building the largest andmost varied
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectworldscolumbianexpos
