Catalogue of apparatus, to illustrate magnetism, galvanism, electrodynamics, electromagnetism, magno-electricity . pf^iiTiPirrmTTiTTmTiTmTnTinMiiiminniJiuFicr 1^4 Double Beam Axial Engine Price $15. to 26 DAVIS S CATALOGUE Fig. Fig. 127. Electro-Magnet in frame. Price $8. to Fig. 128.

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Keywords: ., bookautho, bookcentury1800, bookdecade1850, bookpublisherbostonsn