Catalogue of apparatus, to illustrate magnetism, galvanism, electrodynamics, electromagnetism, magno-electricity . Fig. K. Horns Igniting Telegraph. DAVISS CATALOGUE OF APPARATUS. Fig-. L. 46. Fig. L. Signal Lever. Fig. M. Price $

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Keywords: ., bookautho, bookcentury1800, bookdecade1850, bookpublisherbostonsn