SCIENTIFIC SUBJECTS

BY SIR JOHN F. W. HERSCHEL, BART., K. H.;

M.A.; D.C.L.; F.R.S. L. AND E.; HON. M.R.I.A; F.R.A.S.; M.C.U P.S.

MEMBER OF THE INSTITUTE OF FRANCE; AND

CORRESPONDENT, ASSOCIATE, HONORARY OR ORDINARY MEMBER OF VARIOUS OTHER
ACADEMIES AND INSTITUTIONS

Anchura Spai

ALEXANDER STRAHAN, PUBLISHER

56 LUDGATE HILL, LONDON

1867

C.

WEM AORK

LENOX LIBRARY

NEW YORK

VII. ON LIGHT. PART II.-THEORIES OF LIGHT-INTER-

VIII. ON LIGHT. PART III.-DOUBLE REFRACTION--POL-

219

268

X. THE YARD, THE PENDULUM, AND THE METRE,

XIII. ON THE ABSORPTION OF LIGHT BY COLOURED MEDIA,

VIEWED IN CONNEXION WITH THE UNDULATORY

THEORY,

476

XIV. ON THE ESTIMATION OF SKILL IN TARGET-SHOOTING, 495