N.

Naming the Stars, 381.

Nasmyth, 35.

National Debt, 339.

Nature of Saturn’s Rings, 225.

Nebula in Orion, 388.

” Ring, in Lyra, 354.

Nebulæ, 353.

Nebulæ and Solar System compared, 367.

Nebulæ, Distances of, 366.

” Photographs of, 362.

Nebulæ, Stars in, 366.

” What made of, 359.

Neptune, Discovery of, 244.

Neptune, Former Observations of, 252.

Neptune’s Brightness, 252.

” Clouds, 253.

Neptune’s Diameter, Distance, Period, and Rotation, 391.

Neptune’s Size, 253.

” Satellite, 253.

Neptune’s Satellite, Distance and Period of, 393.

Neptune’s Time of Revolution, 213.

Newton’s Discoveries, 178.

Night and Day, 46, 51.

Noonday Gun, 5.

North Pole, 53;

Continual Day at, 70;

Sunshine at, 71.

November Showers of Meteors, 299.

Number of Books Necessary to describe Universe, 372.

Number of Minor Planets, 207.

” ” Stars, 321.

Star-land: Being Talks With Young People About the Wonders of the Heavens · 第 135 / 146 题