A HISTORY OF THE SCIENCES Astronomy, by Prof. George Forbes, F.R.S. In Active Preparation—

Chemistry, 2 volumes, by Dr. T. E. Thorpe, C.B., D. Sc., F. R. S., etc. (Director of Government Laboratories)

Old Testament Criticism, by Prof. ARCHtBALd Duff

(Prof. of Hebrew and Old Testament Theology in

the United College, Bradford) New Testament Criticism, byF. C. Conybeare, M.A.

(Late Fellow and Praelectorof Univ. Coll., Oxford) Geology, by H. B. Woodward, F.R.S., F.G.S.

(Assistant Director of Geological Survey) Geography, by Dr. Scott Keltie, F.R.G.S., F.S.A.

Q. P. PUTNAM'S SONS New York London

HISTORY

OF

ASTRONOMY

BY

GEORGE FORBES,

M.A. F.R.S., M. Inst. C. E.
(formerly Professor Of Natural Philosophy, Anderson's College,
Glasgow), Author Of " The Transit Of Venus," Rbndu's
"Theory Of The Glaciers Of Savoy," Etc.

WITH ILLUSTRA TIOHS

G. P. PUTNAM'S SONS
NEW YORK AND LONDON

Obc Knickerbocker press

ASTRONOMY LIBRARY

Copyright 1909,

BY

G. P. PUTNAM'S SONS.

This series is published in London by
The Rationalist Press Association, Limited