friends of freedom are aware of this, they will watch the movements of their opponents, and be on the alert to counteract their intrigues and machinations. The object for which a convention is wanted is so justly odious, and the conduct of the friends of the measure so disgraceful, that I cannot bring myself to believe they will succeed. But I regret to state that the advocates of Slavery in this State are gaining strength, from the indiscretion of the advocates of freedom out of the State. Certain leading newspapers in the Atlantic cities have taken a stand, and held language which is used here in a way calculated to do much mischief. Whether we have the constitutional right to make this a slave-holding State, or not, or whether the opponents of the extension of Slavery, here or elsewhere, may think proper hereafter to call for the interposition of the Federal Gov't to restrain the people of this State, it is certainly bad policy at this time very strongly to urge it, and especially in what may be considered dictatorial language; as it is of all other questions the best calculated to arouse the feelings of State pride, and State rights, and that natural love of unrestrained liberty and independence which is common to our countrymen, and especially to our frontier settlers, who of all men in the world have the strongest jealousy of authority and aversion to restraint. I wish, my friend, you would use your influence to prevail on the newspaper writers to let this question alone for the present. If they are sincere in their opposition to the further extension of Slavery, they will not prematurely urge it, when they are assured that by so doing they can do no good, but much harm. I shall go to St. Louis in a day or two, when I hope to have the pleasure of seeing and congratulating your brother on his late marriage, and becoming acquainted with his lady. This has been the most cool and agreeable, and by far the most healthful summer I have ever seen in this country. The spring was too wet and we were apprehensive of an unfavorable season both for health and vegetation, but we have been most agreeably disappointed. My health was never better. I beg you to present my kind regards to Mrs. B., and to Mr. Craig, and to be assured of my sincere regard. EDWARD COLES. NICHOLAS BIDDLE, ESQ., President of the Bank of the U. S.--Philadelphia. P. S.--Could you or Mr. Vaux furnish me with an assessment of lands in the different counties of Pennsylvania? I want to show that lands are higher in price in free than slave States. GOVERNOR COLES TO ROBERTS VAUX VANDALIA, ILLINOIS, December 11, 1823.