This is the best book ever published on Farm Telephones and has been the sensation of the past year in telephone circles. It is the only book ever issued which treats the subject exhaustively and comprehensively. It is of inestimable value to promoters of rural party lines because it contains all of the arguments that are necessary to show the advantages of rural party lines. It also tells how such lines should be constructed and cared for.
The great growth of the telephone industry during the past few years, and in response to the demand for a comprehensive book, giving a clear, terse idea of the different principles governing the construction, installation, care and management of the various telephones and their appliances, the Practical Telephone Hand Book has been compiled. It is written in a most clear and careful style and aims to give a complete review of the subject of telephony.
No expense has been spared in gathering valuable information, and it has been the aim of the author to make this treatise the most complete elementary book ever written on this subject for all persons interested in this great achievement of modern science.
The text is profusely illustrated by cuts of commercial apparatus and carefully prepared diagrams of circuits. No diagram is given without a full explanation. The apparatus and methods used in making all the tests required in commercial telephone work, including the exchange, are fully treated.
12 Mo. Cloth, fully illustrated, price $1.25
BOOKKEEPING SELF-TAUGHT
By PHILLIP C. GOODWIN
Few, if any of
the technical works, which purport to be self-instructing have justified the claims made for them, and invariably the student either becomes discouraged and abandons his purpose and aim, or he is compelled to enlist the offices of a professional teacher, which in the great majority of instances is impracticable when considered in relation to the demands upon time and the condition of life to which the great busy public is subjected.