NLM Digital Collections

An experimental inquiry into the properties of carbonic acid gas or fixed air: its mode of operation, use in diseases, and most effectual method of relieving animals affected by it ; being an inaugural thesis, submitted to the examination of the Rev. John Ewing, S.T.P. provost ; the Trustees and medical faculty of the University of Pennsylvania, on the 12th day of May, 1797 ; for the degree of Doctor of Medicine