. His system was adopted in sinking the piers of the as showing a new and very clever method of building bridge | which they could perform in the open air. Upon many of | Black Potts Bridge, which crosses the Thames near Richmond, piers, it may not be unint2resting to many of our readers to | them… … to keep out the water pressed air from the cyl- NEW BRIDGE AT COPENHAGEN. while the men were at inder was then admitted by means of a stop-cock. As soon a8 there was an equilibrium | and eyes; but they rapidly get accustomed to the bracing ele-| work in them, in a very similar manner to the method…
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