"Throughout the Galaxy's extended line, Unnumbered orbs in gay confusion shine; Where every star that gilds the gloom of night With the faint tremblings of a distant light, Perhaps illumes some system of its own With the strange influence of a radiant sun." All the stars in the universe have been arranged into groups, which are called nebulæ or starry systems. The fixed star which we call _our sun_ belongs to that extensive nebula the Milky Way, and, though evidently of such immeasurable distance from its fellows, it is probably no farther from them than they are from each other. We know very little of the number and economy of the stars that compose this group. Herschel counted five hundred and eighty-eight in a single spot, without moving his telescope. He found the stars unequally dispersed in all parts of the constellation, and apparently arranged into separate systems or clusters. In a small space in Cygni, the stars seem to be clustered into two distinct divisions, and in each division he counted upwards of one hundred and sixty-five thousand stars. Various changes are constantly taking place among the nebulæ. Several new ones are being formed by the dissolution of larger ones, and it has been ascertained beyond a doubt that many nebulæ of this kind are detaching themselves from the Milky Way at the present time. In the body of Scorpio there is a large opening, four degrees broad, entirely destitute of stars, through which we get a glimpse of regions of space beyond. "Oh, what a confluence of ethereal fires, From urns unnumbered down the steeps of heaven, Streams to a point, and centres on my sight!" Already nearly three thousand nebulæ have been observed, and if each contains as many stars as the Milky Way in that portion of the heavens which lies open to our observation, there must be several hundred millions of stars. How vast and unfathomable to mortal mind must be the ways and attributes of that intelligence that creates and guides in unison these starry worlds! "The hand of God Has written legibly, that man may know The glory of his Maker." This nebula may be traced in the heaven, beginning at the polar star, through the constellations Cassiopeia, Perseus, Auriga, part of Orion, and the feet of Gemini, where it crosses the Zodiac, thence over the equinoctial into the southern hemisphere, through Monoceros and Argo Navis, St. Charles's Oak, the Cross, the Altar, and the feet of the Centaur. Here it passes over the Zodiac into the northern hemisphere, divides itself, one branch running through the tail of Scorpio, the bow of Sagittarius, the shield of Sobieski, the feet of Antonius, Aquila Delphinus, the Arrow, and the Swan. The other branch passes through the upper part of the tail of Scorpio, the side of Serpentarius, Taurus Poniatowski, Goose, neck of the Swan, head of Cepheus to the polar star, where it again unites to the place of its beginning.