Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 318
Canal Company, would be about fifteen million pounds sterling,but the State Commission of Engineers thinks about double that amountwould be a safer calculation, and taking into account the imperfection ofthe data, even this might be exceeded in certain contingencies. TheGovernment of the United… … Fig. 138.—B^itannia Bridge, Menai Straits. IRON BRIDGES. THE credit of having invented the arch is almost universally assigned-^ to the ancient Romans, though the period of its introduction and thedate of its first application to bridge building are unknown. That somecenturies before the Christian…
Inventions
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