Four American Inventors —— Robert Fulton, Eli Whitney, Samuel F. B. Morse, Thomas An; Edison; A Book for Young Americans

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ISBN: 9781331306450 出版年：2016 页码：257 Frances M Perry Forgotten Books

The schoolmaster had left the high stool at his high desk and was walking down among the benches where the boys sat. Most of the pupils looked up to see what he would do. There was one who did not look up. That boy's curly head was bent over an old book in which he was drawing something. He was so busy that he seemed to have forgotten where he was.