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      Scientific American November 11, 1905

      How to Build a Small Alternating-Current Dynamo without Castings

      • By Nevil Monroe Hopkins on November 11, 1905

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      More in the November 11, 1905 issue of Scientific American
      • On the Perception of the Force of Gravity by Plants
      • An English Electric System of Railway Signaling
      • Plant Nutrition
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