Know Thyself, Revised by a Member of the Royal College of Surgeons

Know Thyself, Revised by a Member of the Royal College of Surgeons

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1859 edition. Excerpt: ... circulation of the blood. How may this conclusion be satisfactorily explained? We have before stated that during life the body is continually decaying, and a new body is being formed to take its place. The food that we eat adds new material to the blood. This new material is carried with the blood in its circuit through the system, and is deposited wherever it may be needed. The waste or dead particles, or those which have finished their work, are received into the blood, and their places occupied with new ones fresh with living vigour. These rejected particles contain more or less of carbon, which, coming in contact with the oxygen in the air, received into the blood through the process of breathing, are thereby consumed, producing and generating a general heat throughout the system. This work of interchange of particles, and the burning of the old flesh, is carried on throughout the body; consequently every part of it is warmed. Do all the waste particles pass into the blood to be sent out of the system through the lungs? No; much of the waste of the body escapes through the pores of the skin, in the form of a watery vapour, or, as it is called, "insensible perspiration." Is the natural heat of animal bodies the same in all temperatures? Yes; whether in the icy regions of the polar circles, or in the burning zones of the tropics, the internal warmth of the body, when in health, remains the same. What is the natural heat of the human body? The usual standard of heat in man is ninety-eight degrees of Fahrenheit's thermometer. How warm should a room be in winter to make it comfortable' to live in? From sixty-five to seventy degrees. How warm is it in the shade, on a very hot day in summer? Seldom more than ninety degrees....
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Product details

  • Paperback | 26 pages
  • 189 x 246 x 1mm | 68g
  • United States
  • English
  • black & white illustrations
  • 1236789067
  • 9781236789068