Illustration of the Kuhn (1844 to 1924) flexometallic endotracheal tube and related airway equipment. This tube was usually placed blindly under anesthesia by inserting one’s left hand into the mouth and feeling for the epiglottis and the arytenoid cartilages while the tube was inserted with one’s other hand. The correct position of the tube was then established by listening for the correct breath sounds using the attached earpiece. Also shown is the “Trendelenburg Cone” (lower right) used to administer chloroform. (Image credit: Anaesthesia, 1985, Volume 40, page 1002).