He kept with these companions in the rounds of their drunken carousal and debaucheries enough to blind them as to the real object of his visit. They were drinking freely during the Thursday and Friday of their stay, and were evidently unable to give a connected and reliable account of O'Laughlin's whereabouts during the whole of the time. They thought he spent most of the time in company with one or the other of them; but they admitted that he had had a long interview with Booth at his room at the National Hotel on Friday, the 14th. It was positively proven, however, that he was at the house of Secretary Stanton on the occasion of the reception given to General Grant on the night of the 13th; that he seemed to be in a state of partial intoxication, and pushed himself through the crowd into the hall inquiring for General Grant, saying he wanted to see him. He was told by the Secretary's son that that was no occasion for him to see him, and to step out onto the pavement where the carriage stopped, and he could see him. He stood for some time in the hall looking in through the door at the General. He also said he wanted to see Stanton, and being asked if it was the Secretary he wished to see, he said it was. The Secretary was pointed out to him, but he did not go to him. His manner was so impertinently obtrusive and rude that he was finally requested to leave, and was escorted out of the house by the son of the Secretary. Mr. Stanton at first thought him to be intoxicated, but upon conversing with him concluded he was not. It would appear from all this that the part Booth had assigned to him was the assassination of General Grant, and that his visit to the house of the Secretary was for the purpose of so acquainting himself with the form and features of the General as to be able readily to identify him. Had not the General been called away on that Friday afternoon,--had he accompanied the President to the theatre, as he had intended doing,--there is scarcely a doubt that "Peanuts" would have had two horses to hold, or that some other arrangements would have been made for General Grant's assassination that would have made O'Laughlin a companion of Booth in his flight. We have now seen the development of Booth's plot, and its partial success, but, as to the real object of it, its entire failure. The thing proposed by the head conspirators, whose agents we have been following up in their efforts for its accomplishment, failed of its realization. They had hoped by the policy of assassination to put the rapidly waning cause of the confederacy on its feet again under new and more favorable auspices.