Human anatomy, physiology and hygiene / by T.S. Lambert.

  • Lambert, T. S. (Thomas Scott), 1819-1897.
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Human anatomy, physiology and hygiene / by T.S. Lambert. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    Production and Circulation of Caloric. we cause oxygen and carbon or hydrogen, or both to unite, when heat is given off; and also carbonic acid produced in the first case, and water in the last. Illus. a.—When coal, which is, except ashes, composed of carbon, ia burned, oxygen and carbon unite. \ Illus. b.—Wood is composed of oxygen, carbon, and hydrogen. When wood is burned, the oxygen of the wood unites with its hydro- gen ; heat and water are produced, while any surplus oxygen with oxygen from the air unites with the carbon. Illus. c.—When a coalpit is made, the access of the air is prevented, and there is not oxygen enough to unite with the carbon which re- mains as coal. Illus. d.—When the oil of a lamp or substance of a candle is burned, the same process takes place as when wood is burned; the oil, tallow, wax, &c. being composed of oxygen, carbon, and hydrogen. 145. Heat may be produced in the human system by having oxygen unite with carbon or hydrogen, or both. Heat might be first produced and then circulated, or the ma- terials by which it can be produced might be first circulated, and the heat then produced in all parts; or both plans could be com- bined, which would be the best. The substances which become useless as tissues, are found upon examination to be composed of oxygen, carbon, and hydrogen. Hence, if oxygen could be circu- lated in the minute tubes before mentioned, it would easily act upon any surplus carbon and produce heat and carbonic acid. For such a purpose, the two sets of large tubes before mentioned would be necessary, and also some means for causing the oxygen to enter them. If a sufficient amount of heat were not thus produced, more oxygen, carbon, and hydrogen must be introduced. 146. Heat might be circulated through the body by having a current of fluid constantly flowing here and there, which would take heat from one part and yield it to another. How do we ordinarily produce heat ? What is the effect of burning coal ? Wood ? Oil ? How may heat be produced in the human system ? If oxygen be circulated through the system, what will be the effect ? How may heat be circulated 1