ON THE

UNDULATORY THEORY OF OPTICS.

Designed for the Use of Students in the University,

BY

GEORGE BIDDELL AIRY, M.A.

ASTRONOMER ROYAL,

=

FORMERLY FELLOW OF TRINITY COLLEGE, AND LATE PLUMIAN PROFESSOR OF
ASTRONOMY AND EXPERIMENTAL PHILOSOPHY IN THE

UNIVERSITY OF CAMBRIDGE,

A NEW EDITION.

London and Cambridge:
MACMILLAN AND CO.

1866.

Cambridge:

PRINTED BY C. J. CLAY, M.A.

AT THE UNIVERSITY PRESS.

THIS Treatise on the Undulatory Theory of Optics was first printed in the year 1831, as the last Essay in the Second Edition of a series of "Mathematical Tracts;" and was subsequently reprinted, occupying a similar place, in successive editions of that work.

At the suggestion of the Publisher, it has now, with my approval, been printed in a separate form. Its arrangement and details are however the same, without material alteration, as in the Fourth Edition of the "Mathematical Tracts."

I am happy to state that the work has been passed through the press under the superintendence of Robert Morton, Esq., B.A. of St Peter's College. Every security is thus given for the general accuracy of the publication.

G. B. AIRY.

rlan of 12-13-37

ROYAL OBSERVATORY, GREENWICH,

1866, July 27.