LONDON:
SAVILL AND EDWARDS, PRINTERS, CHANDOS STREET,
COVENT GARDEN.
Transcriber's Notes
Variations in spelling, hyphenation, capitalization, and punctuation have been retained from the original book. The Table of Contents and List of Illustrations do not exactly match the chapter, section, and illustration titles in the text.
The following changes have been made:
Page [70]: Missing word "of" added (avail themselves of the means).
Page [183]: Typo estalishment changed to establishment (establishment of telegraphic communication).
Tables in the Appendix have been modified in format, but not in content, to fit the plain-text spacing constraints.