30 JANUARY 1892, Page 40

The Practical Telephone Handbook. By Joseph Poole. (Whittaker and Co.)—This

is practically a guide to the telephone systems and exchanges now in use ; and as everything is clearly explained and illustrated, it is a most convenient little book, and we may recommend it to those who wish to understand how the elaborate systems of telephonic communication are worked.—Belonging to the same series is The First Book of Electricity and Magnetism, also a handy little text-book. This, " The Library of Art, Science,

," is distinct from " The Library of Popular Science."