Directions for an extension of the practice of recovering persons apparently dead [electronic resource] : taken from the instructions at large, published by Alexander Johnson, M.D. (Introducer of the practice in England,) and confirmed by reports received from abroad: Tending to shew, that more benefit will arise to the nations, from extending the knowledge of the original treatment here set forth, to be exercised generally by men of all denominations, than from its being restrained to the efforts of a comparatively small number of medical assistants and country practitioners, recommended by the several humane socienties in this kingdom; and who, professionally occupied, cannot be at hand to give that instantaneous assistance upon which the hope of success is founded, at that critical moment when fleeting life exists but like a spark.