"Telephone" Article - Table of Contents

IA. INTRODUCTION
Part 1. Telephone - Introduction

IB. HISTORY OF THE TELEPHONE
Part 2. History of the Telephone

II. TELEPHONIC INSTRUMENTS
Part 3. Telephonic Instruments
Part 4. Telephonic Circuits
Part 5. The Working of Telephone Circuits



The above article was written by Thomas Gray, B.Sc., F.R.S.E.; Glasgow.