It is stated that Horace Wells was present at this operation, which was quite successful, but, being warned that ether was dangerous to life, the experimenters abandoned its use in favour of nitrous oxide gas. [Sidenote: Morton’s experiments with ether] In 1846, W. T. G. Morton (referred to previously) who had been in partnership with Wells as a dentist, and assisted him in the unfortunate experiment with nitrous oxide in Boston, now directed his attention to the finding of a more suitable anæsthetic for painless operations in dental surgery. After many unsuccessful attempts with various narcotics, Charles T. Jackson, a chemist of Boston, whose pupil he had been, suggested that he should try sulphuric ether, the properties of which had been known for so long. [Illustration: CHARLES T. JACKSON] [Sidenote: Jackson’s story] It was about the end of September, 1846, that Jackson states he informed Morton that he had experimented on himself by inhaling ether on a folded towel. He found that he lost all power over himself, and fell back in his chair in a state of curious sleep. Morton, however, tells another story, and relates how, having procured some chemically pure ether on September 30th, 1846, he shut himself in a room alone and inhaled the vapour. He states: “I found the ether so strong that it partly suffocated me, but produced no decided effect. I then saturated my handkerchief and inhaled it from that. I looked at my watch and soon lost consciousness. As I recovered I felt a numbness in my limbs, and a sensation like nightmare. I thought for a moment I should die in that state, but at length I felt a slight tingling of the blood in the end of my third finger, and made an effort to press it with my thumb, but without success. At the second effort I touched it, but there seemed to be no sensation. I attempted to rise from my chair, but fell back, and looked immediately at my watch and found that I had been insensible between seven and eight minutes.” THE FIRST DENTAL OPERATION UNDER ETHER