Mr. J. W. Lockwood, a respectable merchant in Troy, New York, and son of the late mayor, kept two or three young women as 'helps' for his lady, last winter. The name of one is Eliza Mead, and the name of another is Catharine Dillon, a native of the county of Limerick, Ireland. Eliza was an upper servant, who took care of her mistress and her children. Catharine was and is now the cook. Eliza appeared to her mistress to be a very well educated, and a very intellectual woman of 35, though she would try to make believe she could not write, and that she was subject to fits of insanity. There was then presumptive evidence that she wrote a good deal, and there is now positive evidence that she could write. She used often, in the presence of Mrs. L., to take the Bible and other books and read them, and would often say she thought the Protestants had a better religion than the Catholics, and were a better people. Afterwards she told Mrs. L. that she had doubts about the Catholic religion, and was inclined toward the Protestant: but now she is sure, quite sure, that the Catholic alone is the right one, FOR IT WAS REVEALED TO HER. On the evening of the 23d of December, 1851, Eliza and Catharine were missing;--but I will give you Catharine's affidavit about their business from home. "City of Troy, S. W. "I, Catharine Dillon, say, that on Tuesday, 23d December inst, about five o'clock in the afternoon, I went with Eliza Mead to see the priest, Mr. McDonnel, who was at home. Eliza remained there till about six o'clock P. M. At that time I returned home, leaving her at the priest's. At half past eight o'clock the same evening I returned to the priest's house for Eliza, and waited there for her till about ten o'clock of the same evening, expecting that Eliza's conference with the priest would be ended, and that she would come home with me. "During the evening there had been another besides Mr. McDonnel there. About ten o'clock this other priest retired, as I understood. Soon after this Mr. McDonnel called me, with others, into the room where Eliza was, when he said that she (Eliza) was POSSESSED OF THE DEVIL Mr. McDonnel then commenced interrogating the devil, asking the devil if he possessed her. The answer was, "Yes." The priest then asked, "How long?" and the answer was, "Six months and nine days." The priest then asked, "Who sent you into her?" The answer was, "Mr. Lockwood." The next question was, "When?" "When she was asleep," was the answer. He then asked the devil if Mr. Lockwood had ever tempted Catharine, meaning me, and the reply was, "Yes." Then the question was, "How many times?" And the answer was, "Three times, by offering her drink when she was asleep?"