Never before 1300 had there been such things in Europe as guns or cannons or pistols. All fighting had been done with bows and arrows or swords or spears or with some such weapons. A sword can only be used on a man a few feet away, but with guns an enemy may be killed and walls battered down miles away. But after gunpowder was invented the armor which the old knights wore was of course no longer of any use, for it could not protect them from shot and shell. So gunpowder has changed fighting completely and made war the terrible thing it has become. Although Marco Polo was supposed to have told about gunpowder and its use in cannons as he had seen it in the East, most people think that an English monk named Roger Bacon knew about gunpowder and also about the compass and perhaps invented them. The monk Bacon knew about so many things which people at that time thought were magic that he was supposed to be in league with the devil, and so he was put in prison. Bacon was the wisest man of his time, but he was ahead of his time. If he were living now he would be honored as a great scientist and inventor. But people thought he knew _too_ much--that any one who knew as much as he did was wicked--that he was prying into God’s secrets, which God did not want any one to know. Others, however, give the credit or the blame for the invention of gunpowder to a German chemist named Schwarz. They say that one day Schwarz was mixing some chemicals in an iron bowl with an iron mixer called a _pestle_, such as druggists use, when, all of a sudden, the mixture exploded and shot the iron pestle right up through the ceiling. Schwarz was much surprised; he had had a narrow escape from being killed; but this gave him an idea. Immediately he set to work to think out a way to use the same mixture in battle to shoot iron pestles at the enemy. Some people think it would have been far better if the pestle had struck and killed Mr. Schwarz at the time, and if his secret had been destroyed with him. We might then never have had the terrible wars and the killing of millions of human beings which have resulted from this discovery. It was quite a while, however, before gunpowder was made strong enough to do much damage. In fact, it was over a hundred years before fighting with guns entirely took the place of fighting with bows and arrows. [Illustration] 57 Thelon Gest Wart Hate Verwas Is this another Latin heading? No, it’s English. Don’t you understand English? It was 1338, and Edward III was king of England. Edward III wanted to rule France as well as England. He said he was related to the former king of France and had a better right to the country than the one who was ruling. So he started a war to take France, and the war he started lasted more than a hundred years. So this is known as the Hundred Years’ War and it is: The Longest War that Ever Was!