This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1893 Excerpt: ...When the oxygen of the air comes near them, they unite with it, and burn, as a candle does, and turn into carbonic-acid gas and water. This makes us warm. The great difference is, that they do not burn nearly as fast in our bodies as they do in the candle; therefore we do not flame and blaze up, nor are we nearly so ...
Read More
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1893 Excerpt: ...When the oxygen of the air comes near them, they unite with it, and burn, as a candle does, and turn into carbonic-acid gas and water. This makes us warm. The great difference is, that they do not burn nearly as fast in our bodies as they do in the candle; therefore we do not flame and blaze up, nor are we nearly so hot as a lighted candle. A piece of fat, for instance, burns rapidly and brightly when put in the fire. But, if we eat the piece of fat, it will make just as much heat within our bodies as if we burned it in the fire. True, the burning will not be so rapid, nor the degree of heat produced so great; but it will last for a much longer time, and the total quantity of heat given out will be the same in both cases. Hence our bodies are warm because we are burning away bit by bit, just as a candle does. Every time we move, feel, think, or, in fact, do anything at all, this burning goes on. Thus our bodily heat is produced, and life is kept up. In brief, Nature warms our bodies on somewhat the same plan by which we warm our houses with a coalstove in the winter. 98. How the Heat of the Body is regulated.--How is it that the warmth of the body is the same at every season of the year and in every climate? Let me try to make this plain. If we put a drop of water, ether, or alcohol on the back of our hand, we feel the skin there grow colder; this is because the heat required to evaporate the liquid is taken from the skin. As the sweat evaporates from our skin, it produces cold. Now, the hotter the air outside of us, the more we sweat; but, as fast as the sweat comes out of the pores, it evaporates, and so more cold is produced. In this way the heat of the skin and of the blood is kept from rising much above ninety-eight degrees Fahrenheit. If the air outsi...
Read Less
Add this copy of Physiology for Boys and Girls; a Revised Edition of How to cart. $59.74, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2016 by Palala Press.