------------------------------------------------------------------------
SUPPLEMENT.
COMMENTS OF SPECIALISTS.
Before their publishing, the proof-sheets of this volume were submitted
to a number of prominent scholars in Europe and America, for their
examination and comment, in order to ascertain if the main thought of
the work seemed justified by the facts known to them in their several
special fields of knowledge and study. Some of the opinions and
suggestions of these scholars as given herewith will have deservedly, in
the eyes of many readers, a weight and value beyond anything that could
be said by the author of this work.