s. The panels are formed of 8 x 12 inch which was recently described in this paper, to whose for the piers, since one hill was composed of loose and solid courtesy we are indebted for the loan of drawings from pieces whose ends overlap and are bolted to the center.post. rock, and the other of slate… … THE MARENT GULCH TRESTLE ON THE NORTHERN PACIFIC RAILROAD ) 1883 SCIENTIFIC AMERICAN, INC
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