SIR,--I have duly received your letter of February the 16th, and have now to express my sense of the honorable station proposed to my ex-brethren and myself, in the constitution of the society for the civilization and improvement of the Indian tribes. The object too expressed, as that of the association, is one which I have ever had much at heart, and never omitted an occasion of promoting while I have been in situations to do it with effect, and nothing, even now, in the calm of age and retirement, would excite in me a more lively interest than an approvable plan of raising that respectable and unfortunate people from the state of physical and moral abjection, to which they have been reduced by circumstances foreign to them. That the plan now proposed is entitled to unmixed approbation, I am not prepared to say, after mature consideration, and with all the partialities which its professed object would rightfully claim from me. I shall not undertake to draw the line of demarcation between private associations of laudable views and unimposing numbers, and those whose magnitude may rivalize and jeopardize the march of regular government. Yet such a line does exist. I have seen the days, they were those which preceded the revolution, when even this last and perilous engine became necessary; but they were days which no man would wish to see a second time. That was the case where the regular authorities of the government had combined against the rights of the people, and no means of correction remained to them but to organize a collateral power, which, with their support, might rescue and secure their violated rights. But such is not the case with our government. We need hazard no collateral power, which, by a change of its original views, and assumption of others we know not how virtuous or how mischievous, would be ready organized and in force sufficient to shake the established foundations of society, and endanger its peace and the principles on which it is based. Is not the machine now proposed of this gigantic stature? It is to consist of the ex-Presidents of the United States, the Vice President, the Heads of all the executive departments, the members of the supreme judiciary, the Governors of the several States and territories, all the members of both Houses of Congress, all the general officers of the army, the commissioners of the navy, all Presidents and Professors of colleges and theological seminaries, all the clergy of the United States, the Presidents and Secretaries of all associations having relation to Indians, all commanding officers within or near Indian territories, all Indian superintendents and agents; all these _ex officio_; and as many private individuals as will pay a certain price for membership. Observe, too, that the clergy will constitute[15] nineteen twentieths of this association, and, by the law of the majority, may command the twentieth part, which, composed of all the high authorities of the United States,