SIDE-LIGHTS ON ASTRONOMY

AND KINDRED FIELDS OF POPULAR SCIENCE

	[PREFACE]
I.	[THE UNSOLVED PROBLEMS OF ASTRONOMY]
II.	[THE NEW PROBLEMS OF THE UNIVERSE]
III.	[THE STRUCTURE OF THE UNIVERSE]
IV.	[THE EXTENT OF THE UNIVERSE]
V.	[MAKING AND USING A TELESCOPE]
VI.	[WHAT THE ASTRONOMERS ARE DOING]
VII.	[LIFE IN THE UNIVERSE]
VIII.	[HOW THE PLANETS ARE WEIGHED]
IX.	[THE MARINER'S COMPASS]
X.	[THE FAIRYLAND OF GEOMETRY]
XI.	[THE ORGANIZATION OF SCIENTIFIC RESEARCH]
XII.	[CAN WE MAKE IT RAIN?]
XIII.	[THE ASTRONOMICAL EPHEMERIS AND NAUTICAL ALMANAC]
XIV.	[THE WORLD'S DEBT TO ASTRONOMY]
XV.	[AN ASTRONOMICAL FRIENDSHIP]
XVI.	[THE EVOLUTION OF THE SCIENTIFIC INVESTIGATOR]
XVII.	[THE EVOLUTION OF ASTRONOMICAL KNOWLEDGE]
XVIII.	[ASPECTS OF AMERICAN ASTRONOMY]
XIX.	[THE UNIVERSE AS AN ORGANISM]
XX.	[THE RELATION OF SCIENTIFIC METHOD TO SOCIAL PROGRESS]
XXI.	[THE OUTLOOK FOR THE FLYING-MACHINE]

SIMON NEWCOMB

PHOTOGRAPH OF THE CORONA OF THE SUN, TAKEN IN TRIPOLI DURING TOTAL ECLIPSE OF AUGUST 30, 1905.