” As the sight of the rainbow should bring to remembrance, what a woeful, what a fearful desolation, once came upon a wicked world, whose foundation was overflown with a flood ! So the sacramental importance, now instamped by the will of God upon the rainbow, should be acknowledged with us. It should be considered as a sign and a seal of a covenant, which the great God has made, that He will not have this world, though a sinful one, drowned any more, nor his church in the world. Upon the view of the admirable meteor, bow proper this doxology;Blessed be our gracious, merciful, and long suffering Lord; who hath sworn, that the waters of Noah shall go over the earth no more! But then, how can we forget the glorious Christ, who is our head in the covenant; and about whose hat voice, tremble to be in ill terms with a God, who with a tempest of hail, and a destroying storm, can immediately crush all that is opposed to him.”Of all the meteors both the fiery and the watery, the poet has well acknowledged ;Who sees bright meteors in the liquid skies,Has the great works of God before his eyes.His powerful thunder, who can understand? Yet our philosophy will a little try to see and say something of it.The account of thunder, given by Dr. Hook, is this : The atmosphere of the earth abounds with nitrous particles of a spirituous nature, which are every where carried along with it. Besides which sort of particles, there are alo others raised up into the air, which may be somewhat of the nature of sulphureous, unctious, and other combustible bodies. We see spirits ot wine, turpentine, camphire, and almost all other combustible bodies, will by heat be rarefied into the form of air, or smoke, and be raised up into the air. All these, if they have a sufficient degree of heat, will catch fire, and be turned into flame, from the nitrous parts of the air mixing with them ; as it has been proved by thousands of experiments. There are also other sorts of such steams, that arise from subterraneous and mineral bodies ; which only by their coming to mix with the nitre of the air, though they have no sensible heat in them, will so ferment and act upon one another, as to produce an actual flame.