Transactions . dical experiments have proved, cannothurt the human organism at all; on the contrary, its effect is refresiling and reviv-ing. I have watched over several hundred oxygen inhalations carried out to curethe lungs, heart, and liver, and have myself repeatedly breathed pure oxygen fourtimes with the apparatus here described—once uninterruptedly for 55 minutes—without once observing any symptom which could be regarded as a sign of injuryto the organism. * Op. jam cit. 120 THE WALCHER PttEUMATOPHORE. Of the above-mentioned three appliances, the writer, considering theextremely favoura
Transactions . dical experiments have proved, cannothurt the human organism at all; on the contrary, its effect is refresiling and reviv-ing. I have watched over several hundred oxygen inhalations carried out to curethe lungs, heart, and liver, and have myself repeatedly breathed pure oxygen fourtimes with the apparatus here described—once uninterruptedly for 55 minutes—without once observing any symptom which could be regarded as a sign of injuryto the organism. * Op. jam cit. 120 THE WALCHER PttEUMATOPHORE. Of the above-mentioned three appliances, the writer, considering theextremely favourable results obtained with it, proposes to describe morefully the pneumatophore and its uses, premising that the principaladvantages of this apparatus over those of Mr. Schwan and Mr. Fleussconsist in its portability, diminished weight, constant readiness for use,and also the complete absence of valves and long passages for the respiredand revivified air. A further essential factor in its superiority is that. Fig. 1. the reagents for the absorption of carbonic acid can be kept always in afit and active condition for use, by keeping the apparatus in a closedglass vessel until immediately before use. Lastly, it may be stated, ifthe question of cost be considered at all in connexion with apparatus forsuch a purpose, that it is comparatively cheap compared with otherappliances. THE WALOHKU PNKUMATOPHORE. 121 A short description of the pneumatophore by Dr. Fillunger appearedin the Transactions of The Federated Institution of Mining Engineers.* A detailed description is therefore scarcely called for here, and it maysuffice to state that it consists essentially of an air-tight bag A (Fig. 1),which, as shown in Fig. 2, is carried over the chest. In the interior ofthe bag is a cylinder &, which contains, under a pressure of 100 atmo-spheres, 60 litres (3,060 cubic inches) of oxygen, a glass flask fitted in ametal cover containing a 25 per cent, solution of caustic soda, and acoarse b
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