THE RETURN OF TEMPEL'S SECOND (1873) COMET.—The comet Tempel2 (1873), which has a period of about 5.28 years, made its last perihelion passage on July 28, 1899, and should, therefore, reappear during the later months of the present year. Although this object will be but of feeble intensity throughout the apparition, it should certainly be observable, therefore M. J. Coniel, of the Paris Bureau des Longitudes, has calculated a daily ephemeris for it from the following elements, which were computed by Mr. Schulof. This ephemeris, an extract from which is given below, covers the period July 29—October 25, and is published in No. 3962 of the Astronomische Nachrichten.