----- 一千零一个公式
Iron Cement. — 7 lb. Of Iron Borings; 2 oz. Of Sal Ammoniac; 1 oz. Of Sulphur; Water in sufficient quantity. Stone Cement. — 25 parts of Linseed Oil; boil with 35 parts of Litharge and 250 parts of fine powdered Burned Lime. Use hot.
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