It is probable enough that the Patent-Laws will be abolished ere long, though the full force of the real objections to them was perhaps not brought out in the debate last week on Mr. Macfie’s motion for their abolition. Sir Roundell Palmer was too metaphysical. The supposed distinction between the copyright of a book and a Patent—that no two men will hit upon the same composition even in substance, while they will hit upon the same idea for an invention—does not prove anything. If a case of general utility could be made out, the abstract justice of giving a man the monopoly of an idea, should he be the first to come upon it, would not be much considered. Lord Stanley, who avoided this mistake, dwelt too much upon such minor points as the practical failure of the law to secure a reward to the inventor and the frequent disproportion between the reward and the service rendered, which are points of _no_ consequence so long as the public is generally a gainer by the law. Lord Stanley, however, touched upon the true reason when he referred to the injury of third parties, which the present law occasions, by reason of Patents being granted to only one out of half-a-dozen persons who come upon the same inventions, or to one of a series of inventors who improve upon each other’s work, and by reason also of the general interference with manufacturing. What we should have liked to see fully stated was the peculiarity of the present circumstances of the country in which these things are true. The statements in fact amount to this—that there is a large number of inventions which Patents are not required to encourage; that these are made as ordinary incidents of business; that invention, improvement of mechanical and chemical processes, is itself a part of a manufacturing business; and that in this way the granting of Patents only impedes manufacturers to whom inventions would naturally come. The full force of these facts cannot be felt unless we recognise that a change in the character of invention has taken place. The Patent-Laws were intended to apply to different manufacturing circumstances from those which now exist, and were based upon different notions about invention; the objection to them is that they either are, or are becoming, out of date. A little consideration will show how true this is.