That there shall no Rain-bow appear forty years before the end of the world, and that the preceding drought unto that great flame shall exhaust the materials of this Meteor, was an assertion grounded upon no solid reason: but that there was not any in sixteen hundred years, that is, before the flood, seems deduceable from holy Scripture, _Gen._ 9. I do set my bow in the clouds, and it shall be for a token of a Covenant between me and the earth. From whence notwithstanding we cannot conclude the nonexistence of the Rain-bow; nor is that Chronology naturally established, which computeth the antiquity of effects arising from physical and setled causes, by additionall impositions from voluntary determinators. Now by the decree of reason and Philosophy, the Rain-bow hath its ground in Nature, as caused by the rays of the Sun, falling upon a roride and opposite cloud: whereof some reflected, others refracted, beget that semi-circular variety we generally call the Rain-bow; which must succeed upon concurrence of causes and subjects aptly predisposed. And therefore, to conceive there was no Rain-bow before, because God chose this out as a token of the Covenant, is to conclude the existence of things from their signalities, or of what is objected unto the sense, a coexistence with that which is internally presented unto the understanding. With equall reason we may infer there was no water before the institution of Baptism, nor bread and wine before the holy Eucharist. [Sidenote: _That there is a Rain-bow of the Moon._] Again, while men deny the antiquity of one Rain-bow, they anciently concede another. For, beside the solary Iris which God shewed unto _Noah_, there is another Lunary, whose efficient is the Moon, visible only in the night, most commonly at full Moon, and some degrees above the Horizon. Now the existence hereof men do not controvert, although effected by a different Luminary in the same way with the other. And probably appeared later, as being of rare appearance and rarer observation, and many there are which think there is no such thing in Nature. And therefore by casual spectators they are lookt upon like prodigies, and significations made, not signified by their natures.