Part 1

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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.

CONTENTS.

Page.

JONAS AN ASTRONOMER 11

PRUNING 23

THE GREAT BEETLE AND WEDGE 35

THE LITTLE BEETLE AND WEDGE 46

SPLITTING 59

HOROLOGY 80

JONAS'S DIAL 94

THE BEE-HIVE 112

JONAS'S MAGNET 124

MAGNETISM 139

INTELLECTUAL PHILOSOPHY 157

OSCILLATIONS 165

ROLLO'S EXPERIMENTS.

JONAS AN ASTRONOMER.

One day, when Rollo was about seven years old, he was sitting upon the steps of the door, and he heard a noise in the street, as of some sort of carriage approaching. A moment afterwards, a carryall came in sight. It drove up to the front gate, and stopped. Rollo's father and mother and his little brother Nathan got out. His father fastened the horse to the post, and came in.

When Rollo first heard the noise of the carryall, he was sitting still upon the steps of the door, thinking. He was thinking of something that Jonas, his father's hired boy, had told him about the sun's shining in at the barn door. There was a very large double door to Rollo's father's barn, and as this door opened towards the south, the sun used to shine in very warm, upon the barn floor, in the middle of the day.