PAGES
Nature, Shape, and Size of the Earth—The Polar 67-123
Compression and Equatorial Protuberance, and
their Cause—The Attraction of Gravitation—The
Mass of the Earth: how Found—How the Earth Holds
the Moon, and the Sun the Planets—The Tides—How
the Moon and Sun Produce Tides—Spring Tides and
Neap Tides—The Atmosphere—The Law and Effects of
Refraction—Dip of the Horizon—The Aberration of
Light—Time: how Measured—Sidereal, Apparent
Solar, and Mean Solar Time—The Clock and the
Sun—Day and Night—Where the Days Begin—The
Seasons—Effects of the Varying Declination of
the Sun—Polar and Equatorial Day and Night—The
Tropics and the Polar Circles—Inequality of
Length of the Seasons—When the Seasons in the
Two Hemispheres will be Reversed—The Calendar,
the Year, and the Month—Reformations of the
Calendar—Different Measures of the Month