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Discoveries and inventions of the nineteenth century (1905)

Routledge, Robert · London : G. Routledge and Sons · leaf 301

An illustration from Discoveries and inventions of the nineteenth century, 1905, leaf 301
Fig. 129.—One of the Breakwaters at Port Said. attention. A trough had to be dredged out of the bed of the shallowlagoon, and on either side of this hollowed out space high sand-bankshad to be erected, and the difficulty of making a solid foundation forthese sand banks was found to be extreme. The…

Inventions

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