OCR Text |
Show i It ft - . Queer Thins About the Body. i i Ono of the most valuable ol the inventions in-ventions made for our eonfortand safety iM the ptiropirative grand. It aetH lik-tho lik-tho eafoty vulve of it boil!!1, lotting nfl 'boat when vu are beeomlu$yanperbusly warm. If our tempcrnturu .rose, seten' or eight degree", v. would not lia.ve twcnty.fotir hours to lire. The wtluo of tho sweat glands is therefore obvious In fact, without it n football, or cr'cket, or rowing match would be on' of question, and we could not safely wall: at a speed of inoro than nquurter of a mile an hour. Nutuie has taken good care, however, that wo should not run abet of these useful organn, and ha? given us no lens than 2,500,000 of them. So inventive was nature when constructing con-structing our body that the difliculty is to stop enumerating bur clever ideas. Sho eaw that we would very toon grow tired if wo had to hold up two heavy g legs by means of muscular effort, so she I had mado the hip joints airtight, and H the pressuio ot the air alone keeps the H leg in its place. I The liver is the most wonderful organ, H containing facilities of several kinds. I But perhaps the most wonderful thing in it is that part sot aside to look out for and arrest poieons. ' I All the food that you eat, except the I fat, lias (o pass through the liver before B going to the heart and body generally; I and in the liver their appear to be H stationed something of the nature of H custouiH officers, who examine every bit H of food and remove from it all substances .dangerous to the body. But they are H only capabb of dealing with small quantities in ordinary food, and when H you are so fooli.-h as to eat poisonous mushrooms or mussels, they are quite Hj .overpowered, B Another protection from danger is H afforded you by the supply of a small K .quantity of hydrochloric acid to the H stomach. There aro little machines in H tho stomachs specially designed for the manufacturo of this acid from the salt H you eat, and they aro to regulated that H they produce a quantity equal to onc- fifth of ono uer cent of the contents of B tho stomach. Experiment shows that HI thiB is exactly tho percentage required H to destroy tho microbes that we swallow H in thousands'in our food But for this thoughtful provision of Nature we would H probably get a new disease witn every H jueal. H Again, tho heart and lungs are, of H course, tho very basis of our life, they H are in constant motion, and if allowed H to rub against the chest walls around H them they will cither get inflamed or H , wear away by friction. Nature has H therefore surrounded them with a double H sac, and botwoeu the outer and inner H layers of it she Jinn placed a quantity of lubricating fluid. H But the mp3b rcmaikukloof all devices H is that for splicing broken bones. Tho H moment 11 bono is broken, a eurgicai H genius is at ouco dispatched from the H brain to the spot, lie proceeds to sur- H round tho broken ends witli a ferrule o H cartilage. This is large ard strong, and H ' takes quite n month to complete. When H the two ends aro held firmly and im- H jnovably in place by the ferrule, thi8 H jnystcrio'i.) ourcon begins to place a K layer of bone between them and solder H them ttuether. B And when tho layer is complete and H tho bone securely welded ho removes the H iorrule, or callus, just as the scaffold is H j-emovod from a iiniuhed buildlne. H Often a bono does not got broken for I .two or three generations, and yet this K power to form the callus, and knowledge .othow to doit, is never lost. -From H .Answcis. |