A system so unequal and unjust has been superseded by the existing law, which imposes duties not for the benefit or injury of classes or pursuits, but distributes and, as far as practicable, equalizes the public burdens among all classes and occupations.  The favored classes who under the unequal and unjust system which has been repealed have heretofore realized large profits, and many of them amassed large fortunes at the expense of the many who have been made tributary to them, will have no reason to complain if they shall be required to bear their just proportion of the taxes necessary for the support of Government.  So far from it, it will be perceived by an examination of the existing law that discriminations in the rates of duty imposed within the revenue principle have been retained in their favor.  The incidental aid against foreign competition which they still enjoy gives them an advantage which no other pursuits possess, but of this none others will complain, because the duties levied are necessary for revenue.  These revenue duties, including freights and charges, which the importer must pay before he can come in competition with the home manufacturer in our markets, amount on nearly all our leading branches of manufacture to more than one-third of the value of the imported article, and in some cases to almost one-half its value.  With such advantages it is not doubted that our domestic manufacturers will continue to prosper, realizing in well-conducted establishments even greater profits than can be derived from any other regular business.  Indeed, so far from requiring the protection of even incidental revenue duties, our manufacturers in several leading branches are extending their business, giving evidence of great ingenuity and skill and of their ability to compete, with increased prospect of success, for the open market of the world.  Domestic manufactures to the value of several millions of dollars, which can not find a market at home, are annually exported to foreign countries.  With such rates of duty as those established by the existing law the system will probably be permanent, and capitalists who are made or shall hereafter make their investments in manufactures will know upon what to rely.  The country will be satisfied with these rates, because the advantages which the manufacturers still enjoy result necessarily from the collection of revenue for the support of Government.  High protective duties, from their unjust operation upon the masses of the people, can not fail to give rise to extensive dissatisfaction and complaint and to constant efforts to change or repeal them, rendering all investments in manufactures uncertain and precarious.  Lower and more permanent rates of duty, at the same time that they will yield to the manufacturer fair and remunerating profits, will secure him against the danger of frequent changes in the system, which can not fail to ruinously affect his interests.