. The Canadian journal ; a repertory of industry, science, and art ; and a record of the proceedings of the Canadian Institute. The "gad" is the only implement of metal, as yet known, which was then used in mining. The rock was excavated prin- cipally by the use of fire, by means of which the mass was softened, and fractured. The main implement made use of to break up the wall rock and \'ein stone, after it was calcined, w.;s a stone maul or " hammer," shown in this cut which represents. Please note that these images are extracted from scanned page images that may have been
. The Canadian journal ; a repertory of industry, science, and art ; and a record of the proceedings of the Canadian Institute. The "gad" is the only implement of metal, as yet known, which was then used in mining. The rock was excavated prin- cipally by the use of fire, by means of which the mass was softened, and fractured. The main implement made use of to break up the wall rock and \'ein stone, after it was calcined, w.;s a stone maul or " hammer," shown in this cut which represents. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Canadian Institute. Toronto : Published by H. Scobie for the Council of the Canadian Institute
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Keywords: ., bookauthorcanadian, bookcentury1800, bookdecade1850, bookyear1852
