WAVE-THEORY OF LIGHT.

ELEMENTARY TREATISE

ON THE

WAVE-THEORY OF LIGHT.

BY

HUMPHREY LLOYD, D. D., D. C. L.; F. R. SS. L. & E.; V. P. R. I. A.;

FELLOW OF TRINITY COLLEGE, DUBLIN.

Second Edition, with Additions.

LONDON:

LONGMAN, BROWN, GREEN, LONGMANS, AND ROBERTS.