The first paper had on it mirth. I placed the point of my finger over the organ, and he immediately broke out into an uncontrollable fit of laughter. I passed off the influence and he instantly became calm. They asked him what he laughed at. He said he did not know; he could not help it. The second paper had on it veneration. I excited the organ, and he immediately bowed his head and assumed the attitude of the most zealous pietist, and appeared to be in earnest prayer. The next paper had on it music. I excited the organ, and he immediately commenced singing with as much earnestness as if his life depended on it. The next paper had on it combativeness. I excited the organ; he immediately doubled his fist and pitched into an imaginary enemy in the most vigorous manner possible. Not to take up too much space in this paper, I will only add, we went through with about twenty of the organs with equally marked results, which both pleased and astonished my friends. They said they now thought there was much more truth in the science of phrenology than they had supposed possible. I then said you have seen the effect of so-called animal magnetism; I will now exhibit a different phase of it. I magnetized him in the usual way, and said he is now as oblivious to all external impressions as if his five senses had no existence. Examine him and satisfy yourselves. After a thorough examination, Dr. Richardson said he believed he could cut off his leg and he would not feel it. I demagnetized him, which restored him to full consciousness. They questioned him about it. He said he did not remember anything done in that state. They then said if it was practicable it would be a good thing in surgical operations. They thanked me for the pleasure of witnessing the experiments, and retired. To understand the different nervous conditions of patients is of vast importance to both dentists and physicians. This cannot be attained without close observation and experience. If the nervous temperament of a patient is known, we shall have a key to guide us in our treatment in every individual case. Temperament is usually divided into six distinct classes: 1st. Nervous bilious; 2d. Nervous sanguine; 3d. Nervous lymphatic; 4th. Bilious nervous; 5th. Sanguine nervous; 6th. Lymphatic nervous. You have doubtless observed a difference in the quality of human teeth. We usually find the best in the nervous bilious temperament, and the poorest in the lymphatic nervous. Viciated tastes and habits do not change the shape of the teeth when once formed, but their quality. Science demands discrimination under varied circumstances; it is not possible to treat all alike, and be equally successful. I shall refer to this again below. I now present you with a few incidents in practice which may serve as a basis for a better elucidation of my subject: