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Commune centrum gravitatis Terrae Solis & Planeta∣rum omnium quiescere.
Nam centrum illud (per Legum Corol. 4.) vel quiescet vel progredietur uniformiter in directum. Sed centro illo semper progrediente, centrum Mundi quoque movebitur contra Hypo∣thesin quartam.
〈2 pages missing〉〈2 pages missing〉 Huic autem differentiae proportionalis est maxima Saturni efficacia ad perturbandum motum Jovis, & propterea perturbatio orbis Jo∣vialis longe minor est quàm ea Saturnii. Reliquorum orbium per∣turbationes sunt adhuc longe minores.