« PreviousContinue »
Principal of the London Working Men's College ; President of the London
Chamber of Commerce
MACMILLAN AND CO.
AND NEW YORK
The Right of Translation and Reproduction is Reserved.
In these days of limited leisure, and continually increasing literary activity, when there is more and more that every intelligent man would wish to read, and apparently less and less time for reading, an apology is required for the publication of a book, however small, which does not profess to contain anything absolutely new. At the same time, the very circumstances above referred to, render it desirable that the observations of specialists should be condensed and epitomized for the general reader, and hence the continually increasing demand for lectures; which need not, because they are popular, be the less truly scientific.
The fact that the present book does not contain anything new to those who have specially studied the parts of science with which it deals, precludes it from constituting any tax on the time of those who have devoted themselves to these subjects.