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To Silver Leather

For leather tanned with sumach, in the place of nitrate of table, face downwards; place the foil upon silver (see No. 3627) the chloride mixed with a the damaged portion of the glass; lay a sheet few drops of rosemary oil may be employed of paper over the foil, and place upon it a with advantage. The silvered surface is block of wood or a piece of marble with a then washed and dried as directed in last reperfectly flat surface; put upon it sufficient ceipt. weight to press it down tight; let it remain in this position a few hours. The foil will adhere to the glass. 3626. Process for Silvering Animal, Vegetable, or Mineral Substances. This process is founded upon the electro-chemical action exercised by certain liquors in which the objects to be silvered are plunged. The method of preparing these liquors is as follows:

Liquor No. 1.-Take 2 parts by weight of caustic lime, 5 of sugar of milk or grape sugar, 2 of gallic acid, and make of them a mixture in 650 parts of distilled water; filter, protect from the air as much as possible, and