. Transactions. Fig. 4.— w>v/iuj:..j rod, in. diam. X 152. Fig. 5.—S\vagi:u tuxgstkn rod, IN. diam. X 152. ZAY JEFFRIES 631 i \ ^- Fig. 6.—Drawn tungsten wire, IN. DIAM. X 169. ^. \ . V, \ -A ^ Fig. 7.—Drawn tantalum wire, IN. DIAM. X 125.
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries