So far, we have traced the story of comets and meteors, and theories concerning their origin, but there still remains the fascinating chapter regarding those meteor streams which cross the earth’s path in uncounted thousands and at regular intervals. For instance there are the great November showers unsurpassed by any, except perhaps the August meteor system. From recent investigations it has been shown that the independent particles of which these systems are composed form part of a great throng moving in orderly paths around the sun. They have proved their right to a place in the “obedient family” which Copernicus recognized as forming the solar system. In those days meteors were regarded as a species of exhalation from the earth and consumed during some processes of change in the upper regions of the atmosphere. Later on, they had attained to the rank of volcanic missiles ejected from the moon, and ascending still higher they were said to be stones falling from the sky, not only on land, but “in the great sea, where they remained concealed.” It was not until the impressive meteoric shower of 1833 that suspicions were aroused concerning a connection between these apparently erratic wanderers in the sky and comets. When Professors Twining and Olmsted of New Haven, U. S. A., observed that the paths of all the meteors during the November shower of 1833 could be traced back to what is termed a “radiant,” and Olmsted went so far as to call the densest part of the swarm a “comet,” these objects attained a new interest in the astronomical world. Olmsted and Twining were the first to show that the meteors are not terrestrial and atmospheric, but bodies truly cosmical. Could Kepler and Copernicus have revisited the former scene of their labors and listened to the discussions concerning the theories advanced in connection with comets and meteors during the latter part of the nineteenth century, they would scarcely have recognized the scheme of the solar system thus unfolded to their view! Not only has the claim of meteorites to membership in that system been firmly established, but the definite seasons for their appearance, and the well-known orbits along which certain meteor streams travel, can now be confidently predicted by astronomers. It is true, unfortunate circumstances may cause delay, as in the case of the failure of the expected return of the November meteor-shower in 1899, November 14–15, but this was undoubtedly due to the disturbing influence of Jupiter and Saturn.