 The True Position of Oxygen as a Restorative in Carbonic Acid Poisoning by W. Ernest Thomson

W. Ernest Thomson, Glasgow Medical Journal 41 (January 1894), pp. 22–38. Cited passage: p. 36, Experiment XLVIII (Physical Experiment), direct comparison of one-third carbon dioxide with two-thirds oxygen or two-thirds air. Only the physical taper experiment is used; the author's therapeutic opinions are not adopted. This is a later primary experiment, not evidence of an 1866 examination observation.