~30. Alcohol in the Polar Regions.~--Experience teaches the same thing as science respecting the effect of alcohol. Captain Ross, Dr. Kane, Captain Parry, Captain Hall, Lieutenant Greely, and many other famous explorers who have spent long months amid the ice and snow and intense cold of the countries near the North Pole, all say that alcohol does not warm a man when he is cold, and does not keep him from getting cold. Indeed, alcohol is considered so dangerous in these cold regions that no Arctic explorer at the present time could be induced to use it. The Hudson Bay Company do not allow the men who work for them to use any kind of alcoholic liquors. Alcohol is a great deceiver, is it not? It makes a man think he is warmer, when he is really colder. Many men are frozen to death while drunk. ~31. Alcohol in Hot Regions.~--Bruce, Livingstone, and Stanley, and all great African travellers, condemn the use of alcohol in that hot country as well as elsewhere. The Yuma Indians, who live in Arizona and New Mexico, where the weather is sometimes much hotter than we ever know it here, have made a law of their own against the use of liquor. If one of the tribe becomes drunk, he is severely punished. This law they have made because of the evil effects of liquor which they noticed among the members of their tribe who used to become intoxicated. Do you not think that a very wise thing for Indians to do? ~32. Sunstroke.~--Do you know what sunstroke is? If you do not, your parents or teacher will tell yow that persons exposed to the heat of the sun on a hot summer day are sometimes overcome by it. They become weak, giddy, or insensible, and not infrequently die. Scores of people are sometimes stricken down in a single day in some of our large cities. It may occur to you that if alcohol cools the body, it would be a good thing for a person to take to prevent or relieve an attack of sunstroke. On the contrary, it is found that those who use alcoholic drinks are much more liable to sunstroke than others. This is on account of the poisonous effects of the alcohol upon the nerves. No doctor would think of giving alcohol in any form to a man suffering with sunstroke. ~33. Effects of Alcohol upon the Tissues.~--Here are two interesting experiments which your teacher or parents can make for you. _Experiment 1._ Place a piece of tender beefsteak in a saucer and cover it with alcohol. Put it away over night. In the morning the beefsteak will be found to be shrunken, dried, and almost as tough as a piece of leather. This shows the effect of alcohol upon the tissues, which are essentially like those of lower animals. _Experiment 2._ Break an egg into a half glassful of alcohol. Stir the egg and alcohol together for a few minutes. Soon you will see that the egg begins to harden and look just as though it had been boiled.