We have already said that it is the main-spring, and we may add, barring the Great Author, the source and fountain of animated Nature; the source of light and heat, the two stimulants of vital force, without which no animated life could exist on this earth; and so, doubtless, with all the other planets and worlds which it controls. And, while contemplating it thus as the immediate source of unnumbered blessings to the human race, and to all intelligences or animation belonging to this, or other worlds within its domain, we should not fail in devout reverence to the _great Author_, who created all by the "Word of His Power"--not only our Sun and its retinue of attendant planets, but those innumerable, far distant ones of which we have told you, with all _their_ attendant trains, yea, even all things, above, around, and beneath; the computation of whose numbers, their magnitude, grandeur, and transcendent glory so far exceeds our finite comprehension, that we are lost in wonder and amazement, and can but feel that, in comparison, we are less than an _atom_ of this vast and boundless Universe of Creation. The Sun, represented as a "brilliant orb" a "luminary" or "luminous body," has also been denominated a "globe of fire." Some astronomers consider it an "_incandescent_ body" (_glowing whiteness of intense heat_). Dr. Herschel's views respecting the Sun are, that it is a planetary body like our earth, diversified with mountains and valleys, to which, on account of the magnitude of the Sun, he assigns a prodigious extent--some mountains six hundred miles high, and valleys proportionately deep. He does not employ in his explanations volcanic fires, as some others have done, but supposes two separate regions of dense clouds floating in the solar atmosphere at different distances from the sun. The exterior stratum of clouds he considers as the depository of the sun's light and heat, while the interior stratum serves as an awning or screen to the body of the sun itself, which thus becomes fitted to sustain life-animation. This refutes the idea advanced by that celebrated French Astronomer, La Lande, who held "that the sun is a solid opaque body, having its exterior diversified with high mountains and deep valleys, and covered all over with a burning sea of liquid matter. The solar spots, he supposed, were produced by the flux and reflux of the fiery sea, retreating occasionally from the mountains, and exposing to view a portion of the dark body of the sun." But Prof. Olmsted (to whom we are indebted for this and much other information on this subject), refutes this hypothesis by showing the inconsistency that fluid, of the nature here spoken of, or supposed to exist, should depart so far from its equilibrium and remain so long fixed, as to lay bare the immense space occupied by the solar spots--some of which are supposed to be fifty thousand miles in diameter.