The Abolitionists have agents employed in this city, whose business it is to tamper with negroes, offer them free passage to Chicago, and conduct them across the river, and to the first relay near Upper Alton. The negroes are taken on in wagons, in the night, driving thirty to forty miles in a night, and concealing them during the day. The expenses are paid by the abolition societies. In this way a large number of negroes have been run off during the past summer. In addition to the regular agents of the regular line of negro stealers, there are other negro thieves who come to this city and remain for a time, finding many congenial spirits in our midst, who will wink at the boxing up and shipping a stolen negro as dry goods as a very witty device. As to their aide and accomplices in Illinois it is in our power to point to clergymen who openly express their willingness to serve their Creator by harboring and concealing stolen property.-