IMMENSE LUMP OF COPPER.largest Single IJicet; Foil ml in History aV 1 he World,Houghton, Mich,, Mai ell 24.—The lurg-rst muss uf iiiilive cupper over onruno• lorerf in a»r ini 110 in tho Luke Superior district, or in the world, has been lt;}is-covered in Iho ninth level of “ll” shaft at: iho Michigan mine. Tln minors Jiuvonot yet Jisemainoi] the dimensions or the gigantic piece, but the insist lias already been found to be 22 feel in length, Hi sit being UK fur as tho drift: bus been os * tended alongside of it, 1(1 fret i;i width jiiid several feet in thickness.The copr'(-Y will bnvo to be out info ton picccs before* being hoisted to (be surface.