1Sphere, diſorders the Period of the Inferiour.102The Sphere although Material, toucheth the Material Plane but in one point onely.182The Definition of the Sphere.182A Demonſtration that the Sphere toucheth the Plane but in one point.183Why the Sphere in abſtract toucheth the Plane onely in one point, and not the Material in Concrete.184Contact in a Single Point is not peculiar to the perfect Sphere onely, but belongeth to all Curved Figures.185In a Moveable Sphere it ſeemeth more reaſonable that its Centre be ſtable, than any of its parts.300SPHERE of Activity.The Sphere of Activity greater in Celeſtial Bodies than in Elimentary.59STARRY SPHERE.Wearineſſe more to be feared in the Starry Spherethan in the Terreſtrial Globe.245By the proportion of Jupiter and of Mars, the Starry Sphere is found to be yet more remote.331Vanity of thoſe mens diſcourſe, who argue the Starry Sphere to be too vaſt in the Copernican Hypotheſis.335The whole Starry Sphere beheld from a great diſtance, might appear as ſmall as one ſingle Star.335SPHERICAL.The Spherical Figure is eaſier to be made than any other.186Spherical Figures of ſundry Magnitudes, may be made with one ſole Inſtrument.187SPIRIT.The Spirit had no intent to teach us whether the Earth moveth or ſtandeth ſtill, as nothing concerning our Salvation.436SOLAR SPOTS.Spots generate and diſſolve in the face of the Sun.38Sundry Opinions touching the Solar Spots.39An Argument that neceſſarily proveth the Solar Spots to generate and diſſolve.40A concluſive Demonſtration to prove that the Spots are contiguous to the Body of the Sun.41The Motion of the Spots towards the Circumcumference of the Sun appears ſlow.41The Figure of the Spots towards the Circumference of the Suns Diſcus, appear narrow, and why.41The Solar Spots are not Spherical, but flat, like thin plates.41The Hiſtory of the proceedings of the Academian for a long time about the Obſervation of the Solas Spots.312A conceit that ſuddenly came into the mind of our Academian concerning the great conſequence that followeth upon the Motion of the Solar Spots.314Extravagant Mutations to be obſerved in the Motions of the Solar Spots foreſeen by the Academick, in caſe the Earth had the Annual Motion.314The firſt Accident to be obſerved in the Motion of the Solar Spots, and conſequently all the reſt, explained.315The events being obſerved were anſwerable to the Predictions touching theſe Spots.318Though the Annual Motion aſſigned to the Earth, anſwereth to the Phænomena of the Solar Spots, yet doth it not follow by converſion, that from the Phænomena of the Spotsone may inferre the Annual Motion to belong to the Earth.319The Pure Peripatetick Philoſophers will laugh at the Spots and their Phænomena, as the Illuſions of the Chriſtals in the Teleſcope.319The Solar Spots of Galileo.494STAR and Stars.The Stars infinitely ſurpaſſe the reſt of Heaven in Denſity.30It is no leſſe impoſſible for a Star to corrupt, than the whole Terreſtrial Globe.37New Stars diſcovered in Heaven.38The ſmall Body of a Star fringed about with Rays, appeareth very much bigger than plain, naked, and in its native Clarity.61An eaſie Experiment that ſheweth the encreaſe in the Stars, by means of the Adventitious Rays.305A Star of the Sixth Magnitude ſuppoſed by Tycho and Scheiner an hundred and ſix Millions of times bigger than needs.326A common errour of all Aſtronomers touching the Magnitude of the Stars.326
