CONTENTS.

PART II.

INVESTIGATIONS CONCERNING THE LAWS OR PRINCIPLES
AFFECTING THE POWER OF MAGNETIC STEEL PLATES
OR BARS IN COMBINATION.

CHAPTER I.

AS TO THE POWERS OF COMBINATIONS OF MAGNETIZED
PLATES OF TEMPERED STEEL IN CONTACT

RESULTS

CHAPTER II.

PAGE

97

- 109

ON THE POWERS OF

COMBINATIONS OF MAGNETIZED

STEEL PLATES, SEPARATED BY LIMITED SPACES - 119

RESULTS

128

CHAPTER III.

ON THE RELATIVE POWERS OF COMBINATIONS OF MAG-
NETIZED STEEL PLATES OR BARS, AS AFFECTED BY

DIFFERENCES IN THE

DEGREE OF HARDNESS OR
- 132

NATURE OF THE TEMPER

MAGNETICAL

INVESTIGATIONS.

PART II.

MAGNETICAL

INVESTIGATIONS.

BY THE

(C

REV. WILLIAM SCORESBY, D.D.

FELLOW OF THE ROYAL SOCIETIES OF LONDON AND EDINBURGH;
CORRESPONDING MEMBER OF THE INSTITUTE OF FRANCE,

ETC. ETC.

PART II.

COMPRISING INVESTIGATIONS CONCERNING THE LAWS OR
PRINCIPLES AFFECTING THE POWER OF MAGNETIC STEEL PLATES

OR BARS IN COMBINATION, AS WELL AS SINGLY,
UNDER VARIOUS CONDITIONS AS TO MASS, HARDNESS, QUALITY,
FORM, ETC., AS ALSO CONCERNING THE COMPARATIVE

POWERS OF CAST IRON.

DEV

LONDON:

LONGMAN, BROWN, GREEN, AND LONGMANS,

PATERNOSTER-ROW.