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Teach′ing-ma-chine′.

A machine invented by Alfred Long of London for purposes of instruction in languages and music.

It consists of a series of cubes inclosed in a box with a glass side; on these cubes are written the words (or notes, in case of music) which it is intended the child shall learn, and then, by turning the handle of the machine, the words appear in various arrangements, and are read off each time, or translated as they appear, by the pupils.

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