Present State of the Science of Meteorology--Primordial Condition of the Solar System--Theory of Gravitation the great key of Nature--Bessell's doubts of its perfect adequacy--the Newtonian Vacuum: its difficulties--Nature of the element called Ether--The Medium of Space and the Electric Fluid--Ponderosity of Matter--Dynamical law of Equilibrium--Specific heat and its relation to space--A Plenum not opposed to Gravitation--The medium of space in motion--Formation of Vortices--A new principle developed--Elements of the problem--Hutton's theory of the production of rain--Indications of change and the cause--Action of the Ethereal Current--Physical process of Atmospheric Derangement--Redfield's theory of Storms: its difficulties--All storms are of brief duration and limited extent. 13 SECTION SECOND. Mechanical action of the Moon--The Moon's mass--Axis of the Terral Vortex affected by the Moon: its inclination and position: its displacement--An example of the principle--Corrections necessary--Milwaukie storm--New York storm--Ottawa storm--Liverpool storm--Names and recurring order of the storm-producing agents--Record of the weather--Second New York storm. 58 SECTION THIRD. Lunar influence rejected by the learned--Their conclusions not valid--Modifying causes in accordance with these principles--Years and seasons vary in character--Superficial temperature of different Planets--No storms on the planet Mars--Rotation the cause of Ocean and Atmospheric Currents--Pressure of the atmosphere and its regular and irregular variations--Terrestrial Magnetism--Internal Constitution of the Globe--Magnetic variations--Cause of these variations--Magnetic storms--Aurora Borealis: its altitude--Earthquakes; their possible connection with Storms. 101 SECTION FOURTH. 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 SECTION FIFTH.