How
far such identifications between parts of the world so remote from one
another are to be relied on is perhaps open to question. There is much,
no doubt, to be said upon both sides. It will only be possible for me
to allude very briefly to the principal points at issue; but,
before doing so, I propose to describe the leading characteristics of
the several groups which constitute the lower portion of the above
classification.
The
Upper Gondwanas being of little economic importance, though of great
interest otherwise, may be passed over in this communication. The two
are probably separated by a very distinct break in time, as the lower
are often much disturbed while the upper maintain their original
horizontal positions. Taking
* The Kota Maleri beds alluded to below in the account of the Wardha field may be interpolated here.
