Democratic Sentinel, Volume 17, Number 32, Rensselaer, Jasper County, 25 August 1893 — Know Thyself. [ARTICLE]

Know Thyself.

A male adult has half an ounce of sugai in his blood. The normal temperature of a human body is 98 2-5 degrees. An adult perspires twenty-eight ounces in twenty-four hours. An ordinary man exhales every day one pound of carbonic oxide. As a rule the length of the face is the same as the length of the hand. The rate of pulsation is 120 per minute in infancy, 80 in manhood and 60 in old age. Sweat consists of nearly 99 per cent, water and a little over 1 per cent, of saline matter. Each adult inhales a gallon of air a minute and consumes thirty ounces of oxygen a day. Toe action of the human heart is sufficiantly strong to lift every twenty-four hours 120 pounds. It has beeu computed that the average growth of the fingernail is about one-thirty-second of an inch a week. All the blood in the body makes the entire round of the circulation in twenty seconds, so that three times in every minute all the red globules of the blood, which are the oxygen carriers, must each have its fresh medium of oxygen. In the human body there is said to be more than 2,000,000 perspiration glands communicating with the surface by ducts, having a total length of some ten miles. The blood contains millions of millions of corpuscles, each a structure in itself. The number of rods in the retina, supposed to be the ultimate recipient of light, is estimated at 30,000,000. A German scientist has calculated that the gray matter of the brain is built of at least 600,000,000 cells.