CONTENTS. 



SECTION III. 



Description and illustration of the Laplace Nebular Bypulheais, 24 to 29 inclusive. 



Formation of satellites and of Saturn's rings, 30 and 31. 



Small eccentricities, 32. Accounted for, 33. 



Existence of cornels explained, 34:. 



The Zodiacal Light, as discussed by Laplace, 35. 



Modification of Laplace's Nebular Hypothesis, 36 to 38. 



Pour specialities of the two half-planets Earth and Venus, 39. 



Summation of the same, 40. 



Determination of the mass of a (now) missij^g half-planet interior to Uranus, 41. 



Disappearance of missing mass to be accounted for. It was not broken into asteroids, 42. 



Ten coincidences to show that the missing mass was absorbed and combined with the forming 



Saturn, 43. 

 An llth coincidence shown in a more Ancient Arrangement of the material of the Solar System ; the 



same being exhibited withal in Table (F), 43, 44, and 45. 

 Values of the leading ratio R^ in Table (F), 45. 

 Mass of the Asteroids, 4(3. 

 Agreement of the determination of the asteroid-mass with that indicated by M Le Verrier as 



obtained by a discussion of the perturbations of Mars, 4Y. 

 \st Approximation to the range of the asteroids, by the use of the mass :is previously determined, 49. 

 Mercury'' s place in Table (F). Mercury includes mass of a whole and a half-planet. Eccentricity 

 of his orbit accounted for, 50. 

 . Mass and distance of a possible planet (or rather half-planet) interior to Mercury, 51. 

 Such a mass, so situated, seems to be adequate to the perturbations in the orbit of Venus indicated 



by M. Le Verrier, 52 

 Peculiar relations of the living force of (simultaneous) rotation of some of the planetary masses, and 



of Saturn's rings, 53. 

 Application of other conditions appertaining to the ring-like form. Extension of formula, 54. 

 Induction with respect to Saturn's rings, 55. 

 Application to Neptune and Uranus, 56. 

 Consequent Arrangement of planetary masses; the greater among the more remote, but the greatest 



not the most remote, 57. 

 Consequent and similar arrangement of masses in Saturn's System, 58. 

 Consequent and similar arrangement of Jupiter's System, 59. 

 Arrangement of asteroid-mass. Same seems to be referable to two half-asteroid masses. Range of 



asteroids, and interference of Jupiter, 60. 

 Eccentricity of asteroid- orbits, 61. 

 Approximate relations of the vis viva of (simultaneous) rotation of the half asteroid masses anu that 



of Mars, respectively, 63. 

 Reason for missing terms in planetary or satellite series of distances, 64 and 65. 

 Vacuities in the Saturn-System, 66. 



Commensurability of period ic-times. Influence of a resisting medium at the formation of the revolv- 

 ing bodies provided for by theory, 61. 

 Special characteristics of the Moon and other satellites, 68. 



Explanation of the appearnnce of certain satellites of Jupiter as dark spots, in their transit across 

 the face of their primary. Significance of the same as respects the rotation, tempierature, 

 atmosphere, etc., of satellites, 69. 

 Of the Zodiacal Light-M. Laplace's proof that the Zodiacal Light is not due to the cun's atmos- 



phere, TO. 

 His subsidiary hypothesis as in the constitution of the material which affords «s the light, 71. 

 Eastern and Western appearances of the light have occurred simultaneously, 72. 

 Difficulty of supposing that the material is an immediate solar appendage, 73. 



