DISCUSSION. AN ACCOUNT OF THE BASIN, THE BALANCE DOCK, AND THE MARINE RAILWAYS, AT THE AUSTRIAN NAVAL STATION AT POLA, ON THE ADRIATIC.
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76 POLA DOCK, BASIN, AND RAILTVATS. Mr. H E M A N S , Vice-President., said it appeared tohim that thc dockwall was in fact an extendcd permanent cofferdam of great width filled with concrete, instead of a temporary dam filled with clay. He would ask whether the be'ton was let down into a dry space within the piles, whether it wasdried in the atmosphere before being deposited, or whether it was let down into the water and took its set there? Also, for what reason the walls were made vert...
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