The satellites of Jupiter, four in number and designated as 1, 2, 3, 4, outwardly from the planet, are frequently used to find the longitude. To do this, however, requires the use of a telescope. By observing the time at which one of these satellites passes into or emerges from the shadow of its primary, and comparing this time with the recorded time of the same event in Washington City, for example, one can determine whether he is east or west of this city, and how many degrees. On the 14th No. 1 enters the shadow of Jupiter at 4:46 a. m., Washington mean time. Suppose the observer at Allegheny Observatory should note the same event as occurring at exactly 57 minutes 50.84 seconds after four, Allegheny Observatory time. He would find the difference of the two times to be 11 m. 50.84 s., which reduced to longitude by multiplying by 15 (since one hour of time equals 15° of arc) gives the difference of longitude 2° 57′ 40.3″. And since the ingress occurred at Allegheny Observatory at an earlier hour (by its local time) than by Washington local time, it follows that the latter place is 2° 57′ 40.3″ east of the former. SATURN Continues as in the last two or three months among the morning stars, rising as follows: 1st, at 11:22 p. m.; 15th, at 10:30 p. m.; 30th, at 9:33 p. m. His diameter increases from 16.8″ to 17.8″. His motion is direct, and equal to 1° 7′ 25″. On the 12th, at 9:17 a. m. he is 3° 28′ north of the moon; and on the 16th, at 10:00 a. m. 90° west of the sun, that is, in quadrature. URANUS Makes a direct motion of 1° 43′ 22″ during the month. Its diameter reaches its minimum for the year, 3.48″, on the 20th. On the 19th, at 4:13 a. m. it is 2° 14′ north of the moon. It begins the month as an evening, but closes it as a morning star. It is, however, most of the time above the horizon in daylight. On the 1st it rises at 6:54 a. m. and sets at 7:06 p. m.; on the 30th it rises at 5:24 a. m., and sets 5:30 p. m. NEPTUNE, On the contrary, is above the horizon most of the month during the night, rising on the 1st at 9:37 p. m.; on the 15th at 8:43 p. m.; and on the 30th at 7:44 p. m. Its motion is about 20′ 52″ retrograde, and its diameter nearly constant at 2.6″. On the 10th, at 5:20 a. m., appears 1° 33′ north of the moon. RISE HIGHER. By HELEN G. HAWTHORNE. Soul of mine, Would’st thou choose for life a motto half divine? Let this be thy guard and guide Through the future, reaching wide; Whether good or ill betide, Rise higher! From the mire Where the masses blindly grovel, rise higher! From the slavish love of gold, From the justice bought and sold, From the narrow rules of old, Rise higher!