_Dear Sir_:--I have been long anxious to return you my thanks for your kind letter of May 20th and 26th, and also for the acceptable service you rendered me in making me known to Mr. Vaux, from whom I have had the pleasure of receiving two letters, and a promise of his assistance in preventing our soil from being polluted with the foul and disgraceful stain of slavery. The disinterested and praiseworthy zeal he evinces is as honorable to him, as it is gratifying to me, and is well calculated not only to give me an exalted opinion of his character, but to awaken the most lively feelings of regard and friendship for him. I wish, when you see him, you would tender him my kind regards and thanks for his letter of July 24, and say to him, I hope soon to receive the packages promised. The propriety of calling a convention, or more properly speaking, of making this a slave-holding State, is still discussed with considerable warmth, and continues to engage the undivided attention of the people, being the constant theme of conversation in every circle, and every newspaper teems with no other subject. Unfortunately for the friends of freedom, four out of five of the newspapers printed in this State are opposed to them; and the only press whose editor is in favor of freedom, although a pretty smart editor, has rendered himself unpopular with many by his foolish and passionate attacks upon many of the prominent men on his side of the question. If, however, the advocates of Slavery have the advantage of us in printing presses, we have greatly the advantage of them in possessing men of the most talents, and most able to wield the pen and use the press, with effect; and as three out of four of their presses have professed a willingness to admit well-written original essays on both sides of the question, we shall have not only the best of the argument, but be able, I trust, to present it in the best dress to the public. I am happy in telling you that the advocates of a convention have been losing ground ever since the adjournment of the Legislature; and there is no doubt with me if the question were now to be decided, that a majority of the people would be opposed to it. But what will be the state of the parties next August is another question. Many of the people in this State are very fickle and credulous, and much can be done by designing and unprincipled partisans, and that everything which can possibly be done will be done, we cannot but infer from the extraordinary and unwarrantable measures resorted to last winter in the Legislature in getting up the question, and the great anxiety evinced, and exertions which have been made and are still making to prevail on the people to sanction it. But as the