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Triumphs and wonders of the 19th century, the true mirror of a phenomenal era, a volume of original, entertaining and instructive historic and descriptive writings, showing the many and marvellous achievements which distinguish an hundred years of material, intellectual, social and moral progress .. (1899)

Boyd, James Penny, 1836-1910 · Philadelphia, Pa., A. J. Holman & Co · leaf 322

An illustration from Triumphs and wonders of the 19th century, the true mirror of a phenomenal era, a volume of original, entertaining and instructive historic and descriptive writings, showing the many and marvellous achievements which distinguish an hundred years of material, intellectual, social and moral progress .., 1899, leaf 322
des of the piece as well as against the base of the projectile.This produces two strains; a longitudinal strain which is exerted in-thedirection of the.axis of the piece, and a transverse strain which tends toburst the gun. It is necessary, therefore, to have the piece so strong,especially at the… … 300 TRIUMPHS AND WONDERS OF THE XIXth CENTURY obtained by shrinking cylinders of steel over the original cylinder of thepiece, each outer cylinder or jacket being a few thousandths of an inchsmaller in its interior diameter than the outer diameter of the cylinderwhich it incloses, and being…

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