Mask used for administering ether anaesthesia. This mask also has a carbon dioxide inlet tube. Carbon dioxide was found to promote deeper breather which assisted in attaining faster anaesthesia. The mask was designed by an American anaesthetist James Tayloe Gwathmey, (1863-1944). Gwathmey invented a range of anesthesia equipment. In 1904, he introduced this mask as one part of a resuscitation apparatus. Gwathmey modified an existing mask to more closely fit the contours of the face. The holes in the rim allow for oxygen to be delivered for resuscitation or for the delivery of a combination of oxygen and anaesthetic. Wire framed mask in tear shape. There is a hinged top bracket which allows for a piece of flannel or domette to secured to the mask, onto which the ether would be administered. There is an inlet tube near the hinged bracket to allow for the administration of CO2 or oxygen and the rim is pierced with holes.james tayloe gwathmey, ether, anaesthesia, anesthesiologist, carbon dioxide, oxygen