A chronology of the very early history of inhalation anaesthesia in Canada.

ALTHOUGH SEVERAL WELL DOCUMENTED ARTICLES" are available on tjie history of surgical anaesthesia in Canada, it has not been fully elucidated when information about ether anaesthesia was first brought from the United States to Canada. Furthermore, the available sources contain conflicting reports as to who administered the first surgical anaesthetic with ether and chloroform, as well as the first obstetrical anaesthetic. Fuller states that Dr. Almon was the first to use chloroform for surgical anaesthesia; yet Shields attributes the first chloroform anaesthetic to Dr. A.F. Holmes. According to a recent article by Jacques, Dr. Worthington was the first to administer both ether and chloroform during surgical operations. McKenzie and Fuller report that a chemist, Frazer, of Nova Scotia, administered chloroform to his wife during delivery and that consequently this was the first obstetrical anaesthetic. However, Heagerty credits Dr. Holmes with its first use for parturition in Canada. Thus it is still unclear exactly when, where and who administered the first surgical and obstetrical anaesthetics with ether or chloroform in Canada. It seems appropriate therefore to provide a chronology of the history of early surgical anaesthesia in Canada, in the hope that this may be helpful to future historians.