CONTENTS. JONAS AN ASTRONOMER. PRUNING. THE GREAT BEETLE AND WEDGE. THE LITTLE BEETLE AND WEDGE. SPLITTING. HOROLOGY. JONAS'S DIAL. THE BEE-HIVE. JONAS'S MAGNET. MAGNETISM. INTELLECTUAL PHILOSOPHY. OSCILLATIONS.
ROLLO’S
EXPERIMENTS. BY THE AUTHOR OF ROLLO LEARNING TO TALK, TO
READ, AT WORK, AT PLAY, AT SCHOOL,
AT VACATION, &c. BOSTON:
WEEKS, JORDAN, AND COMPANY Entered according to Act of Congress, in the year 1839, By T. H. Carter, In the Clerk’s Office of the District Court of Massachusetts. STEREOTYPED AT THE
BOSTON TYPE AND STEREOTYPE FOUNDRY.
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