Part 16

Moon: practical observations, 2; newly studied, 3; distance, 4–6; size, 5, 6, 140, 156; shadows (_q. v._), 36, 125; in sun-eclipse, 41; planetary relations, 117–174; and Jupiter, 127; photograph, 137; full, 141, 144, 147; Man in the, 143; mountains, 144; craters, 147, 148; temperature, 159; airless, 160; landscape (_q. v._), 169; age, 171; broken up, 192; like comet, 215. (See _Lunar_.)

Moslem Traditions, 175, 194. (See _Arab_.)

Moss, 160.

Mouchot’s Engravings, 109, 112.

Mountain Sickness, 50, 53.

Naples, 155, 157. (See _Vesuvius_.)

Napoleon, 80, 134.

Nasmyth’s Researches, 11, 12, 14, 24, 25, 140.

Nativity of Jesus, 229.

Nature’s Laws (_q. v._), 176.

Nebulæ, 247.

Needle, 228. (See _Cambric_.)

Neptune, 121.

Nerves, none in camera, 47.

Nerve Transmission, 5, 6.

New Astronomy, 4, 75, 76, 117, 121, 171, 193, 222, 224, 227, 235, 246, 248. (See _Old_.)

Newcomb, Professor, 55.

Newspapers, printed by the sun, 74.

Newton, Professor, 191, 195–197.

Newton, Sir Isaac, 136, 203, 211; on Comets, 215, 219.

Nightmare, 67.

Northern Crown, 208, 211, 230.

Novelists, theme for, 193, 228.

Nucleus, 11, 19, 216. (See _Comets_, _Corona_.)

Oceans, 179.

Old Astronomy, 199, 203, 233. (See _New_.)

Organisms in sun (_q. v._), 13.

Orion, 238, 239, 247.

Oxygen, 73.

Pacific Ocean, 180.

Palinurus, 243.

Parable, 224.

Paris: Observatory, 42, 233, 247; Exposition, 112.

Parker’s Lens, 103.

Peirce, Professor, 44.

Pennsylvania Coal, 97.

Penumbra, 11, 19, 20.

Perpignan, France, 42.

Perseus, 196.

Persian Rugs, 70.

Philadelphia, 88.

Philosopher’s Stone, 92.

Phœbus, 34.

Phosphorus, 221.

Photographic Plate, 71.

Photography, 9, 19, 128, 236, 237, 241, 244, 247, 248; rapid, 242.

Photometer, 56, 108.

Photometry, 230.

Photosphere, 7, 17, 64.

Pickering, Professor, 132, 227, 228, 246.

Pico Summit, 148.

Piffard, Dr. H. G., 245.

Pike’s Peak, 50, 53–57, 60.

Pilgrim Fathers, 5.

Pine-boughs, 25.

Pine-trees, 60, 72.

Pittsburg Observations, 18, 19. (See _Allegheny_, _Langley_.)

Planetoids, 196, 197, 229.

Planets: condition, 97; pulverized, 100; and moon, 117–174; isolated, 176. (See _Jupiter_, _Mars_, _Mercury_, _Saturn_, _Sirius_, _Stars_.)

Plants, 72, 73. (See _Flowers_.)

Plato Crater, 147, 148, 151, 152.

Pleiades, 17, 231, 245. (See _Lost_.)

Plume, The, 19, 23, 24, 55.

Pointers, 208. (See _Dipper_.)

Poison, 222.

Polariscope, 49.

Polarization, 18.

Polarizing Eye-piece, 14, 18.

Polar Star, 230. (See _Great Bear_.)

Polyp, 152.

Pores, 24.

Pouillet’s Invention, 93.

Printing, indebtedness to the sun, 74.

Prism, 63, 64. (See _Colors_, _Scarlet_.)

Proctor’s Observations, 14, 59, 69, 87.

Prospero’s Wand, 221.

Ptolemy, 155, 161.

Pyramids, 99, 117, 233, 234. (See _Egypt_.)

Pyrheliometer, 93.

Race, simile, 179.

Radiant Energy, 71, 74; rate, 104.

Radiation, 101, 108.

Railway Explosion, 182, 183.

Railway, The, 156.

Rain, 111.

Rainbow, 70.

Ranyard’s Photographs, 50.

Red Sea, 116.

Reflection, 216.

Repulsive Force, 215.

Ribbons, 70, 236.

Rifts, 163, 164.

Rings, 123, 124, 152, 155. (See _Saturn_.)

Rockets, 67, 68.

Rocky Mountains, 88, 89, 180.

Roman Boy, 34.

Rope, 20, 26.

Rose-leaf, 63, 70. (See _Leaves_.)

Rowland’s Photographs, 237.

Ruskin, quoted, 29.

Russia, 134.

Rutherfurd Photographs, 8, 9, 137, 143, 155, 234.

Sal-ammoniac, 14, 25.

Salisbury Plain, 1, 2.

Sandstone, 192.

Saturn, 118, 119, 121, 123, 124, 127–129, 136, 215.

Saturnian Dwarfs, 223, 224.

Saul, comparison, 77.

Saxon Forefathers, 1, 2. (See _Britain_.)

Scarlet, 67. (See _Colors_.)

Schwabe, Hofrath, 76, 77, 87.

Scott, Sir Walter, quoted, 92.

Screen, 10, 35–37.

Seas, lunar (_q. v._), 143.

Secchi, Father, 14, 15, 24, 25, 29, 30, 43, 59, 235.

Segmentations, 30, 31.

Self-luminosity, 215.

Sextant, 224.

Shadows. (See _Lunar_.)

Shakspeare, quoted, 60, 220.

Sheaves, 68.

Shelbyville, 42, 43.

Sherman, observations at, 88.

Ship, comparison, 133. (See _Steamer_.)

Shooting-stars, 35, 193, 196, 198, 199. (See _Falling_, _Meteors_.)

Sicily, 50. (See _Etna_.)

Siemens, Sir William, 111.

Sierra Nevada, 151, 160, 180.

Signal Service, 90.

Silicon, 107.

Sirius, 179, 222–224, 236–238.

Slits, 59, 63, 64.

Smoked Glass, 11.

Snow-flakes, 19, 35.

Snow-like Forms, 25.

Sodium, 237.

Solar Engine, 75, 109.

Solar Light (_q. v._), 13.

Solar Physics, 4, 12, 14. (See _Sun_.)

Solar System, 228, 229.

South America (_q. v._), 80.

South Carolina, meteors, 194, 195. (See _Charleston_.)

Southern Cross, 234.

Space, 181, 211, 224, 227, 229.

Spain, expedition, 44.

Sparks, 107, 108.

Spectra, 231, 237.

Spectres, 54, 55. (See _Brocken_.)

Spectroscope, 7, 50, 59, 61, 63, 64, 130, 176, 198, 219, 222, 233–235, 240.

Spectrum, 65, 235.

Spectrum Analysis, 12.

Speculations, 193.

Spinning-wheel, 115.

Springfield Observations, 44.

Spurs, 208, 212, 215.

Star of Bethlehem, 229. (See _Tycho_.)

Stars: new study, 3; location, 4; size, 4, 230; seen in darkness, 35; self-shining suns, 35, 118; host, 117; variety, 118; five, 118; elements, atmosphere, 179; showers (see _Meteors_), 195; seen through comet, 212, 215; chapter, 221–250; analysis, children, 222; distances, 223; intervals, 224, 227, 229; colors (_q. v._), glory, 227; new, fading, 230; double, 233; relation to man (_q. v._), 233; fixed, 233; changing place, 234; mass, 237; ages, 238; photographed, 244, 247; chart, 247; death, 248. (See _Falling_, _Planets_, _Shooting_.)

Steam, 74, 75.

Steamers, 21, 73, 115.

Steel, melted, 104–108. (See _Iron_.)

Stellar Spectra (_q. v._), 222, 236, 237, 244, 245.

Stevenson, George, 111.

Stewart’s Observations, 88.

Stonehenge, 1–3.

Stones: from heaven, 175, 176, 186, 187, 191, 193; Iowa, 199, 200. (See _Meteorites_.)

Stonyhurst Records, 88.

Sumbawa Observations, 181.

Sunbeams: lifting power, 72; Laputa, 73; printing, 74; motes, 215. (See _Light_.)

Sun: practical observations in Washington, 2, 3; new study, 3; surroundings, 4, 35–69; distance, 4–6; size, 5, 6; a private, 6; views, 6–12, 15, 16, 20; details, 7; fire, 8, 91, 92; telescopic view, 8; axis, 9; revolutions, 10; surface, 17; paper record, 18; heat (_q. v._) and eye, 19; drawings exaggerated, 29, 30; something brighter, 32; atmosphere, 33, 34; slits, 59; miniature, 64; flames (_q. v._), 69; energy, 70–116 (see _Heat_); versatile aid, 74; children, 75, 222; shrinkage, 99; ground up, 100; emissive power, 104; constitution and appearance, 111; god, 116; self-shining, 118; studied from mountains, 167; affected by dust (_q. v._), 185; and comet, 216; elements, 233; a star, 237; life, 238; candle, 249; anecdote, 250. (See _Solar_.)

Sunrise, 234.

Sunset, 181, 182. (See _Twilight_.)

Suns: millions, 224; dwindling, 227; periods, 241.

Sun-spots, 1–34 _passim_; ancient, 8; early observations, 8; changing, 9; great, 10, 20, 24; individuality, darker, 11; leaves (_q. v._), 11, 12; how observed, 18, 19; typical, 21, 22; relative size, 20; hook-shaped (see _Plume_), 24; signs of chaos, 27; double, 32; weather, 76, 90; periodicity, 76–78; temperature, 83; records, 85; variations, 87; (1870), 9, 15, 16, 20; (1873), 20–24; (1875), 25, 28, 30; (1876), 30, 32; (1882), 80, 83–86, 90.

Superga, 38.

Swift, Dean, 73, 131, 132. (See _Gulliver_.)

Sword Meteor (_q. v._), 175.

Tacchini’s Investigations, 43, 49, 62, 66, 68.

Tail, 215, 216. (See _Comets_.)

Tan, 71.

Taylor, Bayard, 139.

Telephone, 84, 89.

Telescopes: many, 17; best, 134; alone, 227, 230; use, 233, 234.

Temperature, 101, 102, 108; of space, 224, 227.

Terminator, 147.

Thermometer, 71, 93, 102; low, 160, 163.

Time, small divisions, 241.

Tippoo Saib, 221.

Total Eclipse (_q. v._), 39–48 _passim_, 55, 59.

Trees, lacking, 168.

Tribune, The New York, 84.

Trinity Church, 72.

Trocadéro, 112.

Trouvelot, E. L., 119, 123, 225.

Turin, 38.

Twilight, small, 38.

Tycho, 144, 229. (See _Star_.)

Tyndall, 98.

Umbra, 11, 12, 19, 20.

United States, comparison, 24.

Uranus, 3, 196.

Vapor, 28.

Vega, 235, 246.

Vegetables, 74.

Veils, 14, 17.

Venus, 118.

Vernier, 3.

Vesuvius: crater, 155, 157; eruption, 181, 183. (See _Naples_.)

Vibrations, 72.

Victoria, 115.

Viscous Fluid, 26.

Vital Force, 14.

Vogel, H. C., 64, 66.

Voids, 181, 227.

Volcanoes, 27, 28; in moon, 167, 193.

Wandering Star, 101. (See _Comets_, _Falling_.)

Washington: Observatory, 2, 86–88; telescope, 122; Monument, 182.

Water, 152; in man, 221.

Waterloo, 80.

Water-wheel, 111.

Watson’s Observations, 49.

Wheat, prices, 79. (See _Breadstuffs_, _Corn_, _Grain_, _Sun-spots_.)

Wheel, comparison, 10.

Whirlpools, 28, 31.

Whirlwinds, 23, 31.

White Light (_q. v._), 48, 62, 63.

Whitney, Mount, 177.

Willow-leaves (_q. v._), 11, 12, 14.

Wing, simile, 215.

Winlock, Professor, 44.

Withered Surfaces, 168, 171.

Wood-engraving, 50.

Worlds and Clouds, 249.

Wrinkles, 172.

Xeres, Spain (_q. v._), 44, 53.

Young, Professor: spectroscope, 44, 50, 65, 234; observations, 56, 59, 61, 68, 69; magnetism, 87, 88; radiation, 101.

Zodiacal Light, 55.

University Press: John Wilson & Son, Cambridge.

Transcriber’s Notes

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