There is, in Nature, an even balance forever kept between the total amounts of animal and vegetable life. "In her wonderful economy she must form and bountifully nourish her vegetable progeny--twin-brother life to her, with that of animals. The perfect balance between plant existences and animal existences must always be maintained, while matter courses through the eternal circle, becoming each in turn. If an animal be resolved into its ultimate constituents in a period according to the surrounding circumstances, say, of four hours, of four months, of four years, or even of four thousand years,--for it is impossible to deny that there may be instances of all these periods during which the process has continued--those elements which assume the gaseous form mingle at once with the atmosphere and are taken up from it without delay by the ever-open mouths of vegetable life. By a thousand pores in every leaf the carbonic acid which renders the atmosphere unfit for animal life is absorbed, the carbon being separated, and assimilated to form the vegetable fibre, which, as wood, makes and furnishes our houses and ships, is burned for our warmth, or is stored up under pressure for coal. All this carbon has played its part, and many parts in its time, as animal existences from monad up to man. Our mahogany of to-day has been many negroes in its turn, and before the African existed, was integral portions of many a generation of extinct species." It seems reasonable to suppose that certain kinds of vegetation and certain kinds of animals should exist together, and that as the character of the vegetation changed, a corresponding change would take place in the animal world. It may be that I am led to these conclusions by "total depravity," or that I lack the necessary humility of spirit to satisfactorily harmonize Haeckel and Moses; or that I am carried away by pride, blinded by reason, given over to hardness of heart that I might be damned, but I never can believe that the earth was covered with leaves, and buds, and flowers, and fruits before the sun with glittering spear had driven back the hosts of Night. IX. THURSDAY After the world was covered with vegetation, it occurred to Moses that it was about time to make a sun and moon; and so we are told that on the fourth day God said, "Let there be light in the firmament of the heaven to divide the day from the night; and let them be for signs and for seasons, and for days and years; and let them be for lights in the firmament of the heaven to give light upon the earth; and it was so. And God made two great lights; the greater light to rule the day, and the lesser light to rule the night; he made the stars also."