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Rh our Plates, but mut till think that thoe thin Plates or Rods of which I there taught the Ue, not to detract from the due Praies of o ueful an Invention, are more convenient than the Micrometers.

In this proportion of the Planets it is worth while to take notice of the prodigious Magnitude of the Sun in comparion with the four innermot, which are far les than Jupiter and Saturn. And ’tis remarkable, that the Bodies of the Planets do not increae together with their Ditances from the Sun, but that Venus is much bigger than Mars.

Having thus explained the two Schemes, there’s no Body I uppoe but ees, that in the firt the Earth is made to be of the ame ort with the ret of the Planets. For the very Poition of the Circles hows it. And that the other Planets are round like it, and like it receive all the Light they have from the Sun, there’s no room (ince the Dicoveries made by Telecopes) to doubt. Another Thing they are like it in is, that they are