A

MATHEMATICAL DESCRIPTION

OF THE

FLYING PENDENT LEVER BRIDGE,

INVENTED BY THOMAS POPE,

ARCHITECT AND LANDSCAPE GARPENER, NEW-YORK ;

PATENTED

BY THE UNITED STATES OF AMERICA .

PROPOSITION i.

The PRINCIPLES, SHAPE, CONSTRUCTION

and extent of this Bridge differ wholly from allothers before invented; and it may with pro-priety be termed, a Flying, Pendent, Lever Bridge.

SCHOLIUM .

First, because the arms of this Bridge spring fromthe abutment on each side, and extend over a river orspace, till they meet in the centre, and form one singlearc, without ceintres, or support of any kind, whilebuilding, save the abutments from which they spring,