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When God appoints, the horned Moon renews
. Universe. 'Euphrof. Chears Mankind indeed! — But, pray, has not the Moon a very great Influence on the Earth, and Plants, and Animals thereon ?
Cleon. It would be endless to recount all the senseless Whimsies that have postessed the Noddles of the credulous Vulgar, in this Respect. Hudibras is very witty on this Subject, and very deservedly.
The Queen of Night, whese vas Command
In high spring Tides, at Mid-night reigns. Tho we are not to imagine that because some have ascribed too much Dominion to the Moon, she has none at all; by her Nearness to the Earth, she very much affects the Air by the Power of Gravity, and causes such Alterations therein as have, doubtless, considerable Effects thereon, with Respect to the Weather at sundry Times. Also, she must be a'lowed to have some Influence on the System of Humours and Juices in the Bodies of Plants and Animals, since we find the Ebbing and Flowing of the Sea are certainly the Effects of her Attraction (as we shall more particularly consider hereafter.)
Her destin'd Rule, o'er Ocean the presides,
Universe. Euphrof. Well, be that as it will, I am not much concerned. Tis sufficiently late, but the Moon, like a Mid-night Sun, invites us with her serene and pleasant Lustre, yet to resist the Laws of tyrant Nature, and banishes 'Sleep from my Eyes; the Bed is a gloomy Idea.
I could, methinks, spend the whole Night in walking over the pleasing shady Scenes of the Park—but Family Order forbids it.
Čleon. Such a Moon-light Night is extremely delightful indeed! The Poets were sensible of this, and have nobly described the Pleasures thereof. Thus antient Homer,
So when the Moon, refulgent Lamp of Night,
DIALOGU E II. Of the Moons or Satellites of Jupiter and
this Evening? you see 'tis like to be a very fine one.
Euphrof. You seem, Cleonicus, to represent the Evening as inviting to a Walk; than which nothing will be more agreeable to me, if you are so inclined.
Cleon. You know, Sister, my Inclinations were always to gratify you in every Thing in my Power.
Euphrof. You are very good for that indeed, Cleonicus ; but which Way will a Walk be most agreeable ? Shall we take a Tour sound the Park, or (as we have sometimes done) over the green Corn Fields to that yonder pleasant Hill?
Cleon. The Moon will make the Avenues of the Park extremely agreeable ; but the Hill will suit with our Design best To-night, which you know was to take a more particular Survey of the Moons which attend Jupiter and Saturn.
Euphrof. Let that determine us then ; I believe we shall have equal Pleasure in going that Way : Are you seady to walk ?
Cleon. I have only the Telescope to take, and then I am.
Euphrof. You are now ready, I fee. But as we go forward, pray, Cleonicus, give me some more particular Account of the Moons, which you say attend Jupiter and Saturn? and also the Reason why some Planets have Moons, and others none ?
Cleon. The Planets Mercury and Venus have no Moons, because they cannot be supposed to want any in such Vicinity to the Sun; and as to Mars, there has been none discovered about him, and it is very likely he has none; either because there may be no Inhabitants there, (for he is a sinall Planet, and of a different Aspect from all the Reft) or else they may be supplied with Light, by Night, some other Way; perhaps by a native Luitre of the Earth or Soil of that Planet, which may shine in the Absence of the Sun, like some natural Phosphers with us. The Almighty can effect the fame Things by more Ways than one, and generally shews his boundless Power and Wisdom by an infinite Variety of Methods he often takes to display it.
Euphrof. Well, it seems Jupiter and Saturn have Moons enough to afford us a Subject of Speculation Tonight. Pray, by whom, and how long have they been discovered ?
Cleon. The Moons or Satellites of Jupiter were discovered first of all by one Galileo, a famous Italian Philosopher, who (as himself tells us) in the Year 1610, on the 7th of January, at Night, saw three small bright Stars very near Jupiter, two on the East Side, and one on the West ; there he took to be fixed Stars at that Time, but happening the next Night to view them again, he saw them all three on the West Side of Jupiter, which made him greatly wonder how this could be, for it was an Event quite inconsistent with the Theory of the Planets and fixed Stars. On the 10th Night he saw but two, and both on the East of Jupiter ; on the rith also he saw but two, and both on the same Side; but one of these was twice as large as the other; and thence he was fure they were not the fame he saw the Night before. On the 13th Night, viewing them again, he saw four of these small Stars, three on the West Side of Jupiter, and