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boro, Mass., for Peter Oliver, one of the crown Judges in the province, and a brother of Andrew Oliver, the Lieutenant-Governor, in the year 1751."
Fig. 20.—Plan of a Rolling-Mill Built at Middleboro, Mass., in 1751.
Mr. Harrison says, in concluding his very interesting paper: "The drawing was made under the supervision of S. Wilder, Esq., of New Castle, Pa., a retired iron manufacturer, who worked in this mill in 1818, and gave the writer the principal dimensions and
