Magnes Sive de Arte Magnetica

Synopsis Propos 9. Direction of Magnetic Rays. 71 Theor. 9. The whole power of the magnet is propagated through all the poles in the circumference, and is directed in a certain manner. 83 Propos. 10. Likeness of a magnet to the earth. Theor. 10. Magnes imitates the nature of the Earth. 85 Propos. 11. Variation of the Magnet. Theor. 11. The needle varies greatly in different parts of the world. 88 Propos. 12. The Inclination of the Magnet. Theor. 12. A magnetic needle, balanced in a certain manner, is elevated or lowered in proportion to the latitude of a certain place. . Propos 13. Motion of a circular magnet. Theor. 13. Magnets in motion Magnets placed next to each other affect circular motions. 101 Propos. 14. Repairing and strengthening of the magnet. Theor. 14. Of the diseases of Magnetus and their care. 111 Propos.15 Iron rods & magnetic force. Theo. 15. Iron and magnetic rods will be pulled by traction, even if they are diverse 114 Propol. 16. Lines of Magnetism. Theor. 16. Magnetic force propagates in straight lines. 115 Propol. 17. Sphere of Magnetism. Theor. 17. It is diffused in the manner of a sphere. 117 Propos. 18. Motion of Magnetism. Theor. 18. In a moment of time he completes the whole Sphere. 118 Propos. 19. The same and different movements of magnetism. Theor. 19. The action of the magnet gradually languishes when he has gone farther. Propos. 20 Proportional propagation of magnetism. 119 Theor. 20. In the unequal spaces of the water, the decrement is lacking. Propos 21. The speed, shape, and size of a magnet. 121 Theor. 21. The speed and efficiency of the magnetic movement, to be deduced from the mass, shape, middle, and distance of the magnet. Propos 22. Proportion of power in homogeneous bodies. 123 Theor. 22. In homogeneous Magnets, as Magnet to Magnet, so virtue to virtue. Propos 23. Proportion of Power in Heterogeneous Magnets. 124 Theor. 23. In heterogeneous magnets it cannot be said, viz. 125 Propos. 24. Magnetic Terms in Direction. Theor. 24. On the separation of various parts from the whole. PREPARATION

A LOT OF WORK. A paradox. Theor. 25. Paradox 1. In Magnetics, the like enjoy the unlike, and vice versa. 129 Theor. 26. Paradox. 2. Two vertices may be arranged in such a way that their hostile points become friendly. 131 Theor. 27. Parad. 3. The weak may overcome the great. 133 Theor. 28. Parad. 4. A counter-magnet can be given any very effective effect, which, however, shows no trace of magnetic direction or vertigo. 135 Theor. 29. Parad. 5. A point is given in Magnetus, to which the adversary, having been driven at different times, now acquires strength by disposing himself in the South, only in Borea. 136 Theor. 30. Parad. 6. From time to time the face of Magnetus, abraded, acquires only one face. 139 Theor. 31. Parad. 7. A magnet draws hot and cold iron. 140 Theor. 32. Parad. 8. The iron pulls and repels with the same extremity. 141 Theor. 33. Parad. 9. From time to time the smaller magnet, separated from the larger magnet, is stronger than the whole. ibid. Analyzes of certain propositions. 142 MAGNETIC ART BOOK SEVNDVS. Whether it is a great application, in which the various uses of this stone are declared. PART I. PROGYMNASMATICS, PROGYMNASMAI Static Magnetic. Theorem 5. On the balancing of the great and the light in the waters. 149. & seq. Pragmatism 1. Magnetic motions & explore. 154 Pragmat. 2. Magnetic motions are to be explored. ibid. Pragmatism 3. It is the same as to be dismembered. ibid. Pragmatism. 4.5.6. On the balancing of a ball in the center of water. 155. & seq. Propos 6. Problem 2. Weigh the force of the magnet on the balance. 159 Propos. 7. Problem 3. To investigate statically how much more the north pole of the magnet pulls than the south pole. 160

Synopsis Propos. 8. Problem 4. To explore how much more the armed magnet draws the unarmed. Propos 9. Problem 5. To test the goodness of iron by the attractive force of a magnet. PRE-GYMNASTICS II Centrobaric Magnetic problem 1. Given a spherical magnetic body of homogeneous parts, find the center of its force. Problem 2 To find the center of power of the magnetic cube, prism, parallelepiped, cylinder, and other ordered bodies. problem 3. To find the same in a conical or pyramidal magnet. problem 4. To find the same in the parabolic. problem 5. Find it in the Hemispherical Magnet. problem 6. Find it in a heterogeneous magnet. problem 7. To find the amount of spurious matter in any given magnet. PRE-GYMNASTICS III. About the making & animation of various Magnetics. Pragmatics 1. Versorij device. Pragmateia 2. Versorij animation. Pragmatics 3. The construction of Chartacei versorij, Pragmatics 4. Declination versorij. IV. A PROGYMNASMA for making Tables for the Magnetic Astrolabe, exhibiting the method and reason of calculating by Sines and Logarithms. SECTION I. Prerequisites. Prerequisites for Tables of Altitudes of the Sun without Almucantara. Lemma 1. To find the meridian altitude of the Sun at any time. 2. Given any given hour, to assign its distance from the South 3. To find the altitude of the Sun, having been placed in the circle at the sixth astronomical hour. 4. To trace the altitude of the Sun in the primary vertical position.

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SYNOPSIS of all the wonderful things in Universal Geometry & Astronomy explained in twelve Problems. PART III. Magnetic Astronomy. Various Magnetic Hypotheses. Chapter I. The Magnetic Sphere. problem 1. To construct a planisphere, or a magnetic astrolabe; 2. To complete the Magnetic Calendar, it is explained by two propositions, Chapter II. Sciotheric-magnetic Vranography. In which the doctrine of the whole first mover is explained by the magnetic reversal of the shadow. problem 1. To construct a magnetic zodiac, 2. To inscribe the azimuths, or verticals, on the prepared magnetic zodiac. 3. Enter the horizon for each given latitude. 5. Astronomical hours from rising and setting, vti and unequal. 6. Construct a magnetic clock. 7. Inscribe the twelve heavenly houses on the Magnetic Clock. 8. Azimuth & Almucantaras, or altitude circles. & horizon. To delineate Magnetically: 9. To describe the Lines of Signs both ascending and descending Magnetically. Chapter 3 Magnetic Horology. By which all kinds of magnetic, non-scietheric, vti, and other astronomical horologies are made in such a way that they show themselves sympathetically to whatever movements you wish. Problem 1 Parascheuasticon showing the motor & mobile system. 2. To construct a Magnetic Clock, Babylon hours. Planetaries, at night and for a long time showing Magneticè. 3. To construct the horoscope of the magnetic planets. and other Astronomical things are made in such a way, that they show themselves sympathetically by whatever motions you will.

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