Important: Safety Warning
This page describes trade processes that use dangerously toxic materials such as cyanide solutions, mercury amalgams, or strong acids. These processes require training, equipment, and precautions far beyond what the text describes.
This information has been left in for historical purposes but should not be acted upon.
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To Frost Silver (Goods may be frosted)
Silver goods may be frosted and whitened by preparing a pickle of sulphuric acid 1 dram, water 4 ounces; heat it and immerse the silver articles until frosted as desired; then wash off clean, and dry with a soft linen cloth, or in fine clean sawdust. For whitening only, a small quantity of acid may be employed.