Catalogue of apparatus, to illustrate magnetism, galvanism, electrodynamics, electromagnetism, magno-electricity . Fig. 121. Double Axial Bell Engine. Fig. 124. Price $ pf^iiTiPirrmTTiTTmTiTmTnTinMiiiminniJiuFicr 1^4 Double Beam Axial Engine Price $15. to 26 DAVIS S CATALOGUE Fig. 127.

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Keywords: ., bookautho, bookcentury1800, bookdecade1850, bookpublisherbostonsn