Chapter D: Q., 210

Drawing of the Solar System, 135.

Dufferin, Lord, 65.

Dunsink Observatory, Telescope of, 95.

Dust from Meteors, 292.

E.

Eagle in West of Ireland, 27.

Earth, Annual Motion of, 56.

” colliding with Comet, 281.

” Diameter of, 391.

” Distance of, from Sun, 391.

Earth, History of, as seen from Stars, 337.

Earth, Internal Heat of, 115.

” Moon-view of, 78.

Earth, Period of, 391.

” Rank of, in Space, 329.

” Rotation of, 49, 391.

” viewed from Sun, 28.

” Visibility of, 369.

Eclipse, Total, Appearances seen during, 40.

Eclipses, How produced, 84.

” Annular, 88.

” of Jupiter’s Satellites, 219.

” ” Moon, 89.

Edinburgh Castle, 114.

Effect of Moon’s Distance on its Appearance, 89.

Electric Lamp, Heating Effect of, 6.

Ellipse, 167;
Importance of, 169.

” and Parabola, 169, 275.

Elliptic Paths of Planets, 169.

Enceladus, Distance and Period of, 392.

Encke’s Comet, 143, 259;
Periodicity of, 260.

Eros, 210.

Eternal Snow on Mountain Summits, 9.

Euclid, 22.

Evening Star, 151.

Examining Moon, Quarter the Best Time for, 107.

Experiment with Burning-glass, 3.

Explosion of Krakatoa, 113.

Express Train to the Sun, 19.

Extinct Craters on the Earth, 114;
on the Moon, 114.

Eye of a Collier, 201.

Eyes, Use of Two, 19.

F.

Facts, Table of Useful Astronomical, 391.

Five o’Clock Tea, Sun’s Share in, 10.

Finlay, Mr., 278.

Flagstaff, Height of, 110.

Flora, Lawn-tennis on, 209.

Fly-boats on Royal Canal, Smooth Motion of, 52.

Flying Machines, 208.

Focus, 5;
of Ellipse, 170.

Football on Moon, 131.

Fossil Trees, 11.

France, Extinct Craters in, 114.

Friday, 135.

G.

Galle of Berlin finds Neptune, 251.

Geissler’s Tubes, 361.

Geography of Mars, 188.

” ” the Moon, 105.

George III. and Herschel, 238.

Georgium Sidus, 240.

Giant Planets, 212;
Orbits of, 213.

Globe, Shadow of, 170.

Grand Meteors, 295.

Gravitation, 120, 186.

” on Moon, 128.

” ” Small Planets, 209.

” ” the Sun, 132.

Great Bear, 161;
Number of Stars in, 323;
How to find, 381.

Green, Mr., 193.

Greenwich, 138.

Grinding Specula, 235.

“Guards,” 383.

H.

Habitability of Moon, 123.

” ” Other Worlds, 133.

Hall, Professor Asaph, 195.

Halley’s Comet, 263;
Reappearance of, 266.

Heat, Internal, of Earth, 115.

” of the Sun, 1.

Heating Effect of Electric Lamp, 6.

Height of Flagstaff, 110.

” ” India-rubber Ball, 19.

” ” Meteor, 296.

” ” the Sun, 57.

Herschel, Caroline, 233, 239.

” William, 230.

” ” at Windsor, 238.

Herschel’s Saturn, 239.

“Hœdi,” or Kids, 385.

Holmes, Oliver Wendell, 370.

Hot Water and the Sun, 14.

Houzeau, 322.

How Astronomers measure the Distances of the Heavenly Bodies, 19.

How Planets are weighed, 142.

” to find the Planets, 390.

” ” name the Stars, 381.

” ” split up a Ray of Light, 351.

Humming-top, 182.

Hundreds of Thousands of Libraries required, 376.

Hyperion, Distance and Period of, 392.