[Illustration: PLATE I. Maps I.-IV.]



HALF-HOURS

WITH

THE TELESCOPE;

BEING A POPULAR GUIDE TO THE USE OF THE TELESCOPE
AS A MEANS OF AMUSEMENT AND INSTRUCTION.

BY

RICHARD A. PROCTOR, B.A., F.R.A.S.,
AUTHOR OF "SATURN AND ITS SYSTEM," ETC.

WITH ILLUSTRATIONS ON STONE AND WOOD.


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An undevout astronomer is mad:
True, all things speak a God; but, in the small
Men trace out Him: in great He seizes man.
YOUNG.

* * * * *