movement in the organs of the body, we shall easily comprehend how to this sudden transposition of the mind, now to one now to another standpoint in order to contemplate its object, may correspond an alternating tension and relaxation of the elastic portions of our intestines, which communicates itself to the diaphragm (like that which ticklish people feel).

In connexion with this the lungs expel the air at rapidly succeeding intervals, and thus bring about a movement beneficial to health; which alone, and not what precedes it in the mind, is the proper cause of the gratification in a thought that at bottom represents nothing. — Voltaire said that heaven had given us two things to counterbalance the many miseries of life, hope and sleep. He could have added laughter, if the means