SIR,--Your favor of April 2d was not received till the 23d of June last, with the volume accompanying it, for which be pleased to accept my thanks. I have read it with great satisfaction, and received from it information, the more acceptable as coming from a source which could be relied on. The retort on European censors, of their own practices on the liberties of man, the inculcation on the master of the moral duties which he owes to the slave, in return for the benefits of his service, that is to say, of food, clothing, care in sickness, and maintenance under age and disability, so as to make him in fact as comfortable and more secure than the laboring man in most parts of the world; and the idea suggested of substituting free whites in all household occupations and manual arts, thus lessening the call for the other kind of labor, while it would increase the public security, give great merit to the work, and will, I have no doubt, produce wholesome impressions. The habitual violation of the equal rights of the colonist by the dominant (for I will not call them the mother) countries of Europe, the invariable sacrifice of their highest interests to the minor advantages of any individual trade or calling at home, are as immoral in principle as the continuance of them is unwise in practice, after the lessons they have received. What, in short, is the whole system of Europe towards America but an atrocious and insulting tyranny? One hemisphere of the earth, separated from the other by wide seas on both sides, having a different system of interests flowing from different climates, different soils, different productions, different modes of existence, and its own local relations and duties is made subservient to all the petty interests of the other, to _their_ laws, _their_ regulations, _their_ passions and wars, and interdicted from social intercourse, from the interchange of mutual duties and comforts with their neighbors, enjoined on all men by the laws of nature. Happily these abuses of human rights are drawing to a close on both our continents, and are not likely to survive the present mad contest of the lions and tigers of the other. Nor does it seem certain that the insular colonies will not soon have to take care of themselves, and to enter into the general system of independence and free intercourse with their neighboring and natural friends. The acknowledged depreciation of the paper circulation of England, with the known laws of its rapid progression to bankruptcy, will leave that nation shortly without revenue, and without the means of supporting the naval power necessary to maintain dominion over the rights and interests of different nations. The intention too, which they now formally avow, of taking possession of the ocean as their exclusive domain, and of suffering no commerce on it but through their ports, makes it the interest of all mankind to contribute their efforts to bring such usurpations to an end.