, this extreme draught being adopted in have been constructed. They are of what are the expectation that the Nesv York harbor known as the hydraulic hopper type, and they channels would shortly be deepened. are the first sea-going dredges to be built in The scheme of improvement which has re-… … tive. The discharge opening is circular and about 4 sitates such extreme caution as must be observed in SECTION THROUGH HOPPERS. liengtb, 800 feet: Beam, fiSfeeteiuobee; molded Depth, 25 feet; Speed, 8 kuotti per hour: Capacity, 28,000 cubic feet. HYDRAULIC S£LF-FI10P£LL£S DR£D&£ " IHOMAS," FOB…
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