des would immediately recommended by M. Klein, is composed of equal parts destroy wax or gutta-percha molds, and their use is of sulphate of iron (green vitriol) and sulphate of mag¬ therefore restricted to plating or facing electrotypes or nesia, kept neutral by bags of carbonate of magnesia other… … A Lesson in Art. Roseleur and Dr. Langbein. Copper sulphate and zinc sulphate, each 5)^ ounces, and crystallized carbonate of A TRADE PAPER PUBLISHER’S EXPRESSION. soda, 15^ ounces. Crystallized carbonate of soda and We take pleasure in inclosing check for $2 in payment of crystallized bisulphide…
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