Excerpt from An Essay on the Medicinal Properties of Factitious Airs: With an Appendix, on the Nature of Blood
It is not quite forty years since the artificial aerial fluids began to be administered as remedies to the human body. The uncertainty, and the errors of the early applications, rendered the progress of the practice flow and doubtful; nor has the experience, or the success of recent and more numerous practitioners, been sufficient to determine the precise power of the aerial fluids, or to dissipate the doubts which are still entertained concerning their use.
The desire of extricating the subject from the conflict of contrary opinions, established prejudices, and opposite interests, has induced the Author, perhaps too hastily, to publish the present work, which, in every sense of the word, deserves the epithet of imperfect.
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