Face mask from Clover's "Portable Regulating Ether Inhaler"

1877-1920

Face mask from anaesthetic apparatus

1906-1940

Face mask from Junker's inhaler for chloroform anaesthesia

1870-1920

Face mask

1890-1920

Face mask from Ormesby's inhaler for ether anaesthesia

1877-1920

Face mask

1894-1930

Coates' modification of Snow's inhaler for chloroform anaesthesia

1854-1880