UliiHI^ H^r^iMJ^-^ZT [Entered at the Post Office of New York, N. Y., as Second Class Matter.] A WEEKLY JOURNAL OF PRACTICAL INFORMATION, ART, SCIENCE, MECHANICS, CHEMISTRY, AND MANUFACTURES. [$3.20 per Annum. NEW YORK, JANUARY 9, 1886. Vol. I.IV.- No. a. 1 [postage prepaid.] [new series.] J … double vertical guide bars, B, (Fig. 5), of steel, which' minish in diameter from base to apex. Except in a Fig. l.-ELEVATION AND PLAN, SHOWING CAISSONS SUP- are diametrically opposite, 15 inches apart, and con- few cases where they are founded upon rock, the POBTINO COLUMNS AND MOVABLE FLATFOBM.…
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