The advertisement of the Seminary which Onahan had enclosed in his last letter to McMaster slipped out and still remains on his desk. He is attaching it to this letter. He likewise encloses a copy of the Resolutions really passed at a meeting in Springfield Illinois and also General Singleton's letter in relation to the course of the Times correspondent. Troops are swarming into the city daily. It is estimated that there are 10,000 now in Chicago to guard the Confederate prisoners. He asks McMaster once more to come to Chicago. :: I-1-m A.L.S. 1pp. 8vo.