creosoted or of unpro- the ground at the bottom of the canal. This kind of wheel as to rise above the mouth of the can when the can becomes behavior of Portland cement concrete in contact with iron; and he was then having prepared a Portland cement deck, three inches thick, but he was afraid that… … STEAM TOWAGE ON CANALS. alike. We have recently examined several of these cisterns, The sharp or pointed bow construction of the boat using An economical substitute for towage on canals, applicable and find that, while the lead on the wood front and sides is these propellers, will render protection…
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