If it was a hot July day the sky would be full of kites, and the Commons would be dotted over with boys holding them, or setting them up, or winding them in, and all talking and screaming at the tops of their voices under the roasting sun. One might think that kite-flying, at least, could be carried on quietly and peaceably; but it was not. Besides the wild debate of the rival excellences of the different kites, there were always quarrels from getting the strings crossed; for, as the boys got their kites up, they drew together for company and for an easier comparison of their merits. It was only a mean boy who would try to cross another fellow's string; but sometimes accidents would happen; two kites would become entangled, and both would have to be hauled in, while their owners cried and scolded, and the other fellows cheered and laughed. Now and then the tail of a kite would part midway, and then the kite would begin to dart violently from side to side, and then to whirl round and round in swifter and narrower circles till it dashed itself to the ground. Sometimes the kite-string would break, and the kite would waver and fall like a bird shot in the wing; and the owner of the kite, and all the fellows who had no kites, would run to get it where it came down, perhaps a mile or more away. It usually came down in a tree, and they had to climb for it; but sometimes it lodged so high that no one could reach it; and then it was slowly beaten and washed away in the winds and rains, and its long tail left streaming all winter from the naked bough where it had caught. It was so good for kites on the Commons, because there were no trees there, and not even fences, but a vast open stretch of level grass, which the cows and geese kept cropped to the earth; and for the most part the boys had no trouble with their kites there. Some of them had paper fringe pasted round the edges of their kites; this made a fine rattling as the kite rose, and when the kite stood, at the end of its string, you could hear the humming if you put your ear to the twine. But the most fun was sending up messengers. The messengers were cut out of thick paper, with a slit at one side, so as to slip over the string, which would be pulled level long enough to give the messenger a good start, and then released, when the wind would catch the little circle, and drive it up the long curving incline till it reached the kite.