292 Improvement in the Construction of Bridges, ^'c. 



J\^o. 1. A section of a bridge, with the roof, suspension posts, and all the parts, 

 upon the pier, loilh a scale of feet. 



JVo. 2. The side elevation of a truss, to the same scale. The height of a truss may le 

 greater or less, by any number of half diamonds, or by a change of the angle of the 

 truss-braces. 



o«o STR\NG'>PICCCS^> 



