The star Gamma in Andromeda is easily located, as it is almost overhead between the dates November 17–27, at a convenient hour in the evening. It is in a line with Epsilon, the star at the left-hand corner of the W-shaped group in the constellation, Cassiopeia, and with Polaris, the Pole Star. The meteors radiating from this point are variously referred to as the Andromedæ, Andromedids, and the Bielids, on account of their supposed connection with the Comet of Biela. As a matter of fact it matters little what they are called, as long as we know their appearance and when and where to look for them. They may be looked upon as supplementary to the story of the comet, and possibly some of the particles may eventually find a resting-place on planet earth. According to Dr. Crommelin of the Greenwich Observatory: “the career of a comet may be said to be over when its meteors have lost all their gas, or when they have been scattered by perturbations over so wide a space that its unity and visibility are lost. These disrupting causes are most effective when a comet is fairly near the sun; therefore the oftener that a comet approaches the sun, the shorter the period of its existence as a comet. I think, therefore, that we can ascribe the great prevalence of long-period comets to the principle of the survival of the fittest.” Long-period comets are those which sometimes require hundreds of years before they return sunward, as, for instance, Donati’s comet with its period of about two thousand years. Others of short period, like Encke’s comet, are regular visitors to the sun, returning after a short interval of a few years along a well-known path. Once upon a time they may have been long-period comets, which have had their paths restricted, owing to the strong attractive pull of the giant planets Jupiter, Saturn, Uranus, and Neptune. As a result of the disturbances (or perturbations, as they are technically called) thus caused, according to the so-called capture theory, Jupiter has annexed fifty comets, including the Comet of Biela. Uranus and Saturn, according to the same theory, own a limited family of two, while Neptune has four, including Halley’s famous comet. Its least distance from the sun is 56 million miles at its point of nearest approach, and 3,200 million miles when at the opposite end of its orbit. But the great majority of these strange bodies appear to travel in parabolas, open curves leading from infinite space to and around the sun, and thence back into the region of the fixed stars.