By A. BERNSTEIN.
CONTENTS:
THE WEIGHT OF THE EARTH—VELOCITY—NUTRITION—LIGHT AND DISTANCE—THE WONDERS OF ASTRONOMY—METEOROLOGY—THE FOOD PROPER FOR MAN.
New York:
CHR. SCHMIDT, PUBLISHER, 39 CENTRE STREET.
Entered, according to Act of Congress, in the year 1869, by
CHR. SCHMIDT,
In the Clerk's Office of the District Court of the United States, for the Southern District of New York.