This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1879 Excerpt: ...which appeared in this journal three weeks ago. As we were the means through which publicity has been given to Professor Hughes's experiments, we have felt it incumbent upon us, in justice both to Mr. Edison and to Professor Hughes, to examine very carefully the two specifications referred to by Mr. Edison, so as to be able to form a perfectly unbiassed opinion of their bearing upon Professor Hughes's researches, that we might be in a position to place the facts before our readers, showing in what respects the two are similar to one another, where they run in a parallel direction, at what point they diverge, and in what particulars there exist essential differences; and, in order to facilitate the forming by our readers of a still more independent opinion, we have thought it best to reprint in extenso the full specification with the accompanying drawings of Mr. Edison's American patent, which will be found on another page, while we subjoin that portion of his British specification--also with the drawing--which has reference to the subject. The examination of these specifications in connexion with Professor Hughes's paper, which we published in extenso in the same issue as the article to which we have already referred,! enables, moreover, each of these eminent inventors to speak for himself in his own words and is again of assistance in the formation of a sound opinion. The whole question involved in a case of priority of scientific discovery or invention, as well as in a case of the infringement of a patent, must rest on the all-important question as to what is claimed as the invention or discovery, and in what way that claim is interfered with by the claims of other parties. It is therefore necessary to determine at the outset of the present inquiry what a...
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