Rollo's Philosophy. [Air]

Оглавление

Abbott Jacob. Rollo's Philosophy. [Air]

PREFACE

CHAPTER I. LOST IN THE SNOW

QUESTIONS

CHAPTER II. FLYING

QUESTIONS

CHAPTER III. VALVE MAKING

QUESTIONS

CHAPTER IV. EXPERIMENTS

QUESTIONS

CHAPTER V. PRESSURE

QUESTIONS

CHAPTER VI. BALLOONING

QUESTIONS

CHAPTER VII. PHILOSOPHICAL DISCUSSION

QUESTIONS

CHAPTER VIII. TASKS

QUESTIONS

CHAPTER IX. BURNING

QUESTIONS

CHAPTER X. GRAVITATION

QUESTIONS

CHAPTER XI. AIR IN MOTION

QUESTIONS

CHAPTER XII. AIR AT REST

QUESTIONS

Отрывок из книги

One pleasant morning, very early in the spring, Rollo's cousin Lucy came to call for Rollo to go on an expedition, which they had planned the day before. It was near the end of March, and the snow had become so consolidated by the warm sun in the days, and the hard frosts at night, that it would bear the children to walk upon it. The children called it the crust; but it was not, strictly speaking, a crust, for the snow was compact and solid, not merely upon the top, but nearly throughout the whole mass, down to the ground.

Rollo and Lucy were going to have an expedition upon the crust. Rollo had a sled, and they were going to put upon the sled such things as they should need, and Rollo was to draw it, while Lucy and Nathan, Rollo's little brother, were to walk along by his side.

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"If we were only light enough," said Rollo, "to float in the air, then we could fly."

"We could paddle about in it, when it was calm," replied his father, "but that would not be flying."

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