This Book has been translated into French, into German, into Polish, and into Tamil (one of the languages of India); it has been extensively published in America; and is well−known wherever the English language is spoken.
The Twelfth Edition consisting of twenty thousand copies being exhausted in less than three years, the THIRTEENTH EDITION is now published.
One or two fresh questions have been asked and answered, and two or three new paragraphs have I been added.
