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Scientific American, Vol. 22, No. 4 (1870) (1870)
leaf 3
dustrial revolu- upper member. The depth in the center is 85°6 ft., and at the end 26:24 fect. The scription : girders are placed “Heretofore we 80 ft. 4 in. apart have made use from center to cen- of concave mir- ter, leaving aclear rors and lenses width of roadway to concentrate of 26 ft. 3in.… … box of the right to tanks with lime shape,lincdwith been made in Paris. The tractile power was sufficient to | tin, will be sufficient. If itis wished to draw a heavy omnibus with fifty passengers. Enginecring states that on the report of the French Gov- ‘The engincers © 1870 SCIENTIFIC AMERICAN,…Internet Archive · Public domain (published before 1931). Free to use for anything.
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