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CONTRIBUTIONS

TO

TERRESTRIAL MAGNETISM.

No. V.

BY

LIEUT.-COLONEL EDWARD SABINE , R.A., F.R.S.,

General Secretary of the British Association for the Advancement of Science; Member, Honorary orCorresponding, of the Imperial or Royal Academies and Societies of Science of St. Petersburg,Norway , Gottingen , Brussels , and Turin , of the University of Kasan, and ofthe American Philosophical Society .

From the PHILOSOPHICAL TRANSACTIONS.— Part II. for 1843.

LONDON :

PRINTED BV R. AND J. E. TAYLOR, RED LION COURT, FLEET STREET.

1843 .