led The sinking of the caisson on the New York side, at the in, the door (before which the workman stands in Fig. 2) is have sufficiently tested them to be assured of their success. foot of Morton street, is progressing satisfactorily. The The work is now as safely done as is possible for any sub-… … PROGBESS OE THE HUDSOH EIVER TUNNEL.-THE NEW YORK CAISSON. > 1882 SCIENTIFIC AMERICAN, INC
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