Circular. Morton’s Letheon.

Unaware of Crawford Long’s results with ether, Morton, having been informed of the anesthetic effects of ether by Charles T. Jackson, promoted its anesthetic effects. To do so he published the above circular, in which he called his anesthetic by the name of “Letheon”. Henry Jacob Bigelow appreciated the significance of the discovery, and Bigelow's paper (No. 5651) soon spread the news throughout the medical world. Digital facsimile of the 5th edition from the Internet Archive at this link.