Catalogue of apparatus, to illustrate magnetism, galvanism, electrodynamics, electromagnetism, magno-electricity . Fig. 18. Groves Battery, in box, (per pair.) Price $, and Fig. Fig. 22. Frog or Leech Battery. Price 50 to 75 cents. 10 daviss catalogue. Fig. 21. Fig. 27.

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Keywords: ., bookautho, bookcentury1800, bookdecade1850, bookpublisherbostonsn