GISEMENTS DE PLOMB DE TUNISIE

Ftyhcr-liill (mine CbryioHlhc) . . . .

/ mine E venin g SUr .

Carbooate-hill ]

( mine Moniing SUr .

lrM»4iU (mine* de la SiUer compnny)

MINERAI

PLOltB

Tonnes

GRAUME8

D^ARGENT

Par tonne

1 kg. 963 1 — 170 0 — 750 0 — 450

Bibliographie.

1868. Simonin. — Mines d'argent du Colorado. (B. S. G., 2«, t, XXV, p. 453 ; r. A. BeuX'M.)

1879. PoszBPMY. — Leadville; die neue Bleistadt in Colorado. {Oester, Zeits,)

1884. H. GuNN. — On the Silver districts of Colorado (Leadville and î. Juan). {Proceedings of the royal physical Society, 1883-84, p. 155. Edimburg.)

** 1886. Emhons. — Geology and mining industry of Leadville.

1889. Daobrbe. — Eaux souterraines.

1890. J.-D. Hawkins. — Minium from Leadville, (The Amer. J. of Se, .XXXIX, p. 42. New-Haven,1890.)