Book I. Reflection from the Snow that covers the Tops of the Hills in Jupiter: But I ſhould rather think that it is only the Colour of the Earth, which happens to be free from thoſe Clouds that commonly darken it.
Mars too is found not to be without his dark Spots, by means of which he has been obſerved to turn round his own Axis in 24 Hours and 40 Minutes; the Length of his Day: but whether he has Clouds or no, we have not had the ſame opportunity of obſerving as in Jupiter, as well becauſe even when he is neareſt the Earth, he appears to us much leſs than Jupiter, as that his Light not coming ſo far, is ſo brisk as to be an Impediment to exact Obſervations: And this Reaſon is as much ſtronger in Venus as its Light is. But ſince ’tis certain that the Earth and Jupiter have their Water and Clouds, there is no Reaſon why the other Planets ſhould be without them. But not juſt like ours.I can’t ſay that they are exactly of the ſame nature with our Water; but that they ſhould be liquid their Uſe requires, as their Beauty does that they ſhould be
