Canadian Jewellers Association · Toronto : Maclean-Hunter Pub. Co · leaf 206
.—To recnt by achemical process dissolve 4 ounces saluratus toone quart of water, sufficient to cover the files,and boil them in it for half an hour; then takeout, wash and dry them ; then stand them ina jar, fill it up with rain water and sulphuricacid in the proportion of 1 quart water and… … eriden gritannia Qo. MANUFACTURERS OF STANDARD CTRO, SILVER AND COLD
Jewelry · Jewelry trade
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