Stránka:roll 1910.djvu/117

BOY SCOUTS OF AMERICA loi of the Dipper swings one and one-half times the width of the opening (i.e., fifteen degrees) in one hour. If it went a quarter of the circle, that would mean you had slept a quarter of a day, or six hours. Each fifteen days the stars seem to be an hour earlier, in three months they gain one-fourth of the circle, and in a year gain the whole circle. According to Flammarion, there are about 7,000 stars visible to the naked eye, and of those but nineteen are stars of the first magnitude. Thirteen of them are visible in the latitude of New York, the other six belong to the South Polar Region of the sky. Here is Flammarion's arrangement of them in order of seeming brightness. Those that can be seen in the Southern Hemisphere only, are in brackets : . Sirius, the Dog-star. . (Canopus, of Argo.) . (Alpha, of the Centaur.) . Arcturus, of Bootes. . Vega, of the Lyre. . Rigel, of Orion's foot. . Capella, of Auriga. . Procyon, or the Little Dog-star. . Betelgeuse, of Orion's right shoulder. . (Beta, of the Centaur.) . (Achernar, of Eridanus.) . Aldebaran, of Taurus, the Bull's right eye. . Antares, of Scorpio. . (Alpha, of the Southern Cross.) . Altair, of the Eagle. . Spica, of Virgo. . Fomalhaut, of the Southern Fish. . (Beta, of the Southern Cross.) . Regulus, of the Lion. I. SIRIUS (Sir'-i-us), of Caitis Major, the Dog-star, the Nile Star. It is a delicate green and by far the brightest star in the sky. It is placed in the head of Orion's hound, whence its name. It is nearly on a line with Orion's belt, away from the pole, and as far from the end of the belt as Betelgeuse is