. Telephones and Telegraphs and Municipal Electric Fire-Alarm and Police-Patrol Signaling Systems . r:ii:;(:l :Ui7Xr-Ti|7tnii. r 212W. CHICAGO ■^ WASHINGTONGOVERNMENT PRINTING OFFICE 1915 ADDITIONAL COPIES OF THI3 PtTBLICATION MAT BE PEOCURED FEOM THE SUPERINTENDENT OP DOCtJMENTS GOVERNMENT PRINTING OFFICE WASHINGTON, D. C. AT 50 CENTS PER COPY CONTENTS. TELEPHONES. Chapter I.—INTRODUCTION. Page. General description of the census of telephones 9 Period covered 10 Unit of enumeration 10 Limitations of the statistics lo Chapter II.—DEVELOPMENT OF THE INDUSTRY. Summary for 191
. Telephones and Telegraphs and Municipal Electric Fire-Alarm and Police-Patrol Signaling Systems . r:ii:;(:l :Ui7Xr-Ti|7tnii. r 212W. CHICAGO ■^ WASHINGTONGOVERNMENT PRINTING OFFICE 1915 ADDITIONAL COPIES OF THI3 PtTBLICATION MAT BE PEOCURED FEOM THE SUPERINTENDENT OP DOCtJMENTS GOVERNMENT PRINTING OFFICE WASHINGTON, D. C. AT 50 CENTS PER COPY CONTENTS. TELEPHONES. Chapter I.—INTRODUCTION. Page. General description of the census of telephones 9 Period covered 10 Unit of enumeration 10 Limitations of the statistics lo Chapter II.—DEVELOPMENT OF THE INDUSTRY. Summary for 1912 12 Comparison with previous censuses 12 Telephone and telegraph systems 13 States and geographic divisions 14 Chapter III.—EQUIPMENT AND TRAFFIC. Nature of equipment 21 Miles of wire 21 Number of telephones 25 Rural telephones 27 Number of central offices or exchanges 30 Messages or talks 30 Traffic and population 33 Chapter IV.—COMPARISON OF BELL AND OTHER SYSTEMS. Companies for which statistics are compared 34 Telephones connected with the Bell system 37 Exchange and toll circuits 38 Messages or talks : 38telephonestelegr1912depa
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Keywords: ., bookcentury1900, bookdecade1910, bookidtelephoneste, bookyear1915
