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your profession?—A Civil Engineer; I am at present the resident and assistant Engineer, under Mr. Telford, to the Parliamentary Commissioners, on the Holyhead Road between London and Shrewsbury, and London and Liverpool.

What is the weight of a Coach, a Van and a Waggon, each carrying what would be considered an average load; state also the breadth of the tires of their wheels?—The weight of four-horse Stage Coaches vary from fifteen cwt. and three quarters to eighteen cwt.; most of the Birmingham day and night Coaches weigh about sixteen cwt. and frequently carry, the night Coaches in particular, upwards of two tons of goods and passengers, exclusive of the Coach; yet taking into consideration the number of times they travel with very light loads. I should say that from two tons five cwt. to two tons ten cwt. including the Carriage, would be a fair average weight during the year. The tires of the wheels are mostly two inches, but some of them are less;, those constructed by Mr. Brown, and used on his patent Coaches have the edges chamfered off, so as to give a flat bearing of one inch and a half, but from the peculiar manner in which those Coaches are mounted with springs. I am inclined to think the injury done to the roads by these wheels is not so great as it otherwise would be. Some Coach wheels that I have seen are rounded off, so as to form in the cross section a segment of about one inch and three quarters in di. The bearing in this case on the road, where the surface is hard and smooth, is reduced almost to a point and must be extremely injurious. The