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Excerpt from American Journal of Pharmacy, Vol. 13: Published by Authority of the Philadelphia of Pharmacy
An electric spark, or any ignited body, a wire made ih candescent by a galvanic discharge, has an in¿uence ana logons to platina sponge, of which the minutest particle is sufficient to cause ignition throughout an in¿ammable mix ture, however large. There is, in this respect, an analogy between the explosion of in¿ammable, gaseous mixtures, and those of gunpowder, and of other fulminating powders, of which some, as it is well known, detonate by percussion or friction, or any cause adequate to derange the iequili.' brium oftheir particles. In the cases last mentioned, the change produced is the same, whatever may be the exciting cause, and the minutest portion of the congeries being made to undergo the change, is ofitself competent to produce a like result as respects the whole.
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