The solar spots--Law of periodicity compared with the theory--Existence
of another planet beyond Neptune probable--Masses of the Sun and
Planet yet uncertain--The Law of Gravitation not above
suspicion--Proofs of this--The full of the Moon--Density of the
Ethereal Medium: its law in the Solar Vortex--Bode's law of the
planetary distances--Law of planetary density--Law connecting the
present and former diameters of the planets--Disturbing action of the
Ether--Kepler's third law not rigidly exact--Inconsistencies of
Astronomers--Nature of light and heat--Distinction between light and
heat. 147