Electro-plating. By J. W. Urquhart. (Crosby Lockwood and Co.)— Not
a bad practical manual of the art of depositing metals by electric agency. The author makes no pretensions to scientific knowledge on his own part, nor does he demand any such knowledge on the part of his readers. Any amateur will find no difficulty in under- standing the book from beginning to end. Everywhere it shows signs of having been drawn up after considerable experienca on the part of the author. There is just enough here about batteries and chemicals and solutions to serve as an introduction to the descrip- tion of the processes whereby copper, silver, gold, and a few other metals are deposited by electric agency. We should have been glad of fuller accounts than Mr. Urquhart gives of nickel-plating and of steel—or rather iron—facing operations, both of which have latterly become of very great importance in the treatment of certain materials used in the fine and decorative arts, and which are more difficult to conduct than any others.
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