In 1840 I became acquainted with Dr. Colyer, then lecturing on Mesmerism, at Peel's Museum, New York, and fully believed, at that time, that he was a humbug, and Mesmerism a fraud. Soon after this, while visiting some friends, with Mr. Pendleton, formerly from Boston, this subject was pretty thoroughly discussed, -Mr. Pendleton insisting that there was truth in it, and that I was not treating it fairly; and he proposed, as a matter of amusement, that...