Catalogue of apparatus, to illustrate magnetism, galvanism, electrodynamics, electromagnetism, magno-electricity . Fig. 160. Contracting Helix. Price $ Fig. 163. Electro Dynamic Revolving Rectangle. Price $ Fig. Fiff 165. Clock Work Electrotome. g* Price $ to $7. 14 daviss catalogue Fig. 167

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Keywords: ., bookautho, bookcentury1800, bookdecade1850, bookpublisherbostonsn