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He later invented the nail-cutting machine which made it possible to cut nails rapidly from wrought iron, whereas they had formerly been hammered out by hand. Thomas H. Barlow invented the Planetarium, an instrument by which the movements of the earth and moon around the sun were shown. State Government and Foreign Intrigue
We have seen that our cautious parent had taken good care not to let her American children learn the use of her tools any farther or faster than she thought good for them and herself. They no sooner got their hands free than they set them at work on various new contrivances. One of the first was the nail-cutting machinery which has been in use ever since.
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