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| | Edison, His Life and Inventions - CHAPTER X |
 | | The Edison phonograph is an important exception to the general rule; not, of course, the phonograph of the present day with all of its mechanical perfection, but as an instrument capable of recording and reproducing sound. |
 | | The original phonograph, as invented by Edison, remained in its crude and immature state for almost ten years--still the object of philosophical interest, and as a convenient text-book illustration of the effect of sound vibration. |
 | | The phonograph of to-day, except for the perfection of its mechanical features, in its beauty of manufacture and design, and in small details, may be considered identical with the machine of 1889, with the exception that with the latter the rotation of the record cylinder was effected by an electric motor. |
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