{"newspaper_name": "Indiana State sentinel.", "edition": "01", "page": "p3", "byline": ""}
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Discovery OF LITHoGRAPHIc Stone N CANADA.-
Mr. Logan, the geologist at present employed in a
geological survey in Canada, has made dscovery,
saws the Montreal Gazette, which promises to be of
great importance. He has found near lake Sincoe
great beds of lithographc stOne-namely. that used
in the lthographic art for taking the drawings and
producing the impression on paper. So large is this
bed, that Mr.. Logan has explored 1t for sixty or
seventy miles Hitherto, Germany has been the sole
source from which the world has been supplied with
this valuable article