REPORT 



Of he committee on Roads and Bridges. 



On Bishop's Railroad Bridge. 



Of Mr. Bishop's Railroad Bridge, the committee are of opinion 

 •that Mr. Bishop has introduced a principle in a great degree ne\r 

 in its application to bridges, and which will be attended with econ- 

 omy and other advantages; and they therefore consider his bridge 

 entitled to a favorable notice on the part of the Institute. 



On Rider''s Iron Railroad Bridge. 



Of Mr. Rider's Iron Railroad Bridge, the committee would say, 

 that in their opinion it is of great importance that railroad bridges 

 should be constructed of a less destructible material than wood, and 

 that every effort to obtain that result, is entitled to encouragement. 

 Mr. Rider, in his plan has aimed to effect this object, by a combina- 

 tion of wrought and cast iron, whereby with a limited amount of 

 material the adequate strength is to be obtained. The committee 

 think favorably of the combination, and that for bridges of not too 

 large span, believe that his plan will be found useful; and they 

 therefore recommend a favorable notice on the part of the Institute. 



The Russ Pavement. 



On the Russ Pavement, the committee are of the opinion that the 

 public are under great obligations to Mr. Horace P. Russ, lor the 

 great attention which he has given to the subject of pavements, and 

 for the enterprise and care with which he has brought into use his 

 pavement in our great thoroughfare, Broadway, to a sufficient extent 

 to enable the public to appreciate its value, and for trial to test its 

 durability. As that trial is now going on, and as the effect of a 

 winter and spring can soon be appealed to, the committee deem 

 unnecessary an expression of opinion as to its durability; but they 



[Assembly, No. 151.] 13 



