pearance of the heavens, at the time proposed, will then be represented by the globe. Show the appearance of the heavens at Washington, March the 20th, at 7 o'clock, P. M. Arcturus is rising at 25° north of east. Procyon has nearly arrived at the meridian; Sirius is a little past; the bright constellation Orion, a little farther past. Capella, to the north, is nearly in the same rank. A little farther in western declination are Aldebaran, the Hyades, and Pleiades. The appearance of the heavens at Boston, on the 23d of September, at 7 h. 40 m., P. M., is required. Fomalhaut may be seen a little above the eastern horizon. Altair is on the meridian; Vega a little declined from the zenith. The constellations Corona borealis, and Bootes, with bright Arcturus fast declining, adorn the hemisphere to the west. A familiar use of the globes is recommended. By it the knowledge of the student in geography and astronomy will be greatly improved. By it he will be more interested in contemplating the visible heavens-an amusement innocent and delightful for the evening or the most lonely hours of night. But, infinitely more important! by observation on the celestial canopy; by the greatness of the scenery presented, he must be irresistibly led to the contemplation of the immensity and infinite goodness of JEHOVAH, THE AUTHOR AND GOVERNOR OF ALL. What are artificial globes? Of how many kinds are they? What is represented on the terrestrial globe? What on the celes tial? How is the equator represented on the terrestrial globe, and how is it graduated? How is the ecliptic represented and divided? What is the brazen meridian? How is it graduated? How is the horizon represented? How do you explain the different eircles on the horizon? What other circles are to be seen on the terrestrial globe? How do you explain the hour circles? What is it to rectify the globe for the latitude of a place? What circles are peculiar to the celestial globe? How are degrees numbered on the equator of this globe? |