We have recently had an opportunity of conversing with one of this class of sacred person, who has within late years embraced Christianity; and have made some notes of the interview, which we will advert to for the purpose of exhibiting his testimony, as to the true character of this class of impostors. Chusco, the person referred to, is an Ottawa Indian who has long exercised the priestly office, so to say, to his brethren on the northern frontiers. He is now a man turned of seventy. He is of small stature, somewhat bent forward, and supports the infirmities of age by walking with a staff. His sight is impaired, but his memory accurate, enabling him to narrate with particularity events which transpired more than half a century ago. He was present at the great convocation of northern Indians at Greenville, which followed Gen. Wayne's victories in the west--an event to which most of these tribes look back, as an era in their history. He afterwards returned to his native country in the upper lakes, and fixed his residence at Michilimackinac, where in late years, his wife became a convert to the Christian faith, and united herself to the mission church on that island. A few years after, the old prophet, who despised this mode of faith, and thought but little of his wife's sagacity in uniting herself to a congregation of believers, felt his own mind arrested by the same truths, and finally also embraced them, and was propounded for admission, and afterwards kept on trial before the session. It was about this time, or soon after he had been received as an applicant for membership, that the writer visited his lodge, and entered into a full examination of his sentiments and opinions, contrasting them freely with what they had formerly been. We requested him to narrate to us the facts of his conversion to the principles of Christianity, indicating the progress of truth on his mind, which he did in substance, through an interpreter, as follows: