""Julius Jeffreys--pioneer of humidification.""
Posted with permission of the author.
Please note that papers printed in the early volumes of the Society's Proceedings were the texts of talks as delivered, hence more personal and informal than one finds in later volumes when the talks were elaborated into academic articles prior to publication.
This paper complements David Zuck's paper, "Julius Jeffreys and the physiology of lung volumes," delivered at a History of Anaesthesia Society conference the following year.
For a larger view of the photograph of Jeffreys' Respirator (courtesy of the Trustees, Science Museum), please click the thumbnail below: