THE GEOLOGY AND GEOGRAPHY OF NORTHERN NIGERIA

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MACMILLAN AND CO., LIMITED LONDON BOMBAY CALCUTTA MELBOURNE

THE MACMILLAN COMPANY NEW YORK BOSTON CHICAGO ATLANTA SAN FRANCISCO

THE MACMILLAN CO. OF CANADA, LTD. TORONTO

PLATE XVII

[_Frontispiece_.]

THE GEOLOGY AND GEOGRAPHY OF NORTHERN NIGERIA

BY J. D. FALCONER, M.A., D.SC. F.G.S., F.R.S.E., F.R.G.S.

_With Notes by the late_ ARTHUR LONGBOTTOM, B.A., F.G.S., _and an Appendix on the Palæontology of the Cretaceous Deposits, by_ HENRY WOODS, M.A., F.G.S. _University Lecturer in Palæozoology, Cambridge_

WITH FIVE MAPS AND TWENTY-FOUR PLATES

MACMILLAN AND CO., LIMITED ST. MARTIN’S STREET, LONDON 1911

RICHARD CLAY AND SONS, LIMITED BREAD STREET HILL, E.C., AND BUNGAY, SUFFOLK.

TO MY OLD TEACHER AND FRIEND PROFESSOR JAMES GEIKIE