enerally designated as gold-plated recording gauges, every alternate instru- mind of the physicist, notwithstanding he may think “electric,” or more precisely ‘‘electro-magnetic,” are ment being provided with an electric light. On one or say that it is an imperfect optical instrument, for- energy… … or knife edges, renders the instrument extremely sensi- Bread Made with Soap. tive to the smallest changes of voltage. The mark- THE. WORLD'S COLUMBIAN EXPOSITION—THE BRISTOLS’ ing arm, F, is attached directly to the spring, E, and From a communication read to the Association of MANUFACTURING…
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