n a perfect state. In 1850, M. Darcy, Surveyor-General of Bridges and Roads, in a report addressed to the minister of public works, pro- posed to apply it immediately on a portion of Paris Boule- vards. However, it was only in 1854 that, under the supervision of M. Hamberg, chief engineer, and M.… … The details, however, are too voluminous to be dwelt upon here. which they are made, as well as the methods of making them, In 1859, the substitution of asphalt for stone paving was As soon as the asphalt rock is properiy broken and ground possesses points of great interest, we have been at the…
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