vi PREFACE.
in
which the subject is dealt with in standard works on Geology. In spite
of the fact that the systematic exploration of the Geology of India has
been in operation for a quarter of a century, old exploded hypotheses
have been passed on from one text-book to another, and their statements
regarding the age of the coal, the diamonds, and many other mineral
productions far from represent the present state of our knowledge.
While
these pages were passing through the press, I have succeeded, I
believe, in identifying the mine where the Koh-i-nur was discovered.
The results of this inquiry, together with a proposed explanation of
the myth regarding diamond mining in India, as described in the travels
of Marco Polo, Sindbad the Sailor, &c, will be found in the
Appendix.