INDEX. 



777 



Eusthenes, Experiment by, 38. 

 Evaporation defined, 83. 

 ,, Laws of, 84. 



Exogens, Endogens and, 665. 

 Experiments, Some of Edison's, 269. 

 Eye, Accommodation in the, 103. 



,, Light in the, 142. 



,, The, an optical instrument, 102. 



Faculae, what they are, 498. 

 Fata Morgana, The, 649. 

 Felspars, 442. 

 Fertilization of plants, 682. 

 Fibrine, 422. 

 Figures, Chladni's, 195. 

 Fiords, Norwegian, 615. 

 Fire, Green, 393. 



,, Red, 395. 

 Fish, A fossil, 577. 

 Electric, 284. 

 ,, Magic, 281. 

 , , New swimming toy, 765. 

 ,, Star, 713. 



Fishes, how they breathe, 353. 

 Fixed stars, The, 535. 

 Flames, Sensitive, 195. 



Singing, 195. 

 Flowers, artificial, Colouring of, 329, 



,, what are they, 675. 

 Fluorine, 368. 



Flying, Earliest attempts at, 294. 

 Foraminifera, The, 705. 

 Force, Centrifugal, 43. 



,, Definition of a, 4. 

 Forces, Natural, 22. 



,, Parallel centre of, 34. 

 Formation, Carboniferous, 578. 

 Eocene, 591. 

 Jurassic, 586. 

 lias, 586. 

 Maestricht, 590. 

 Miocene, 593. 

 Oolite, 586. " 

 Permian, 582. 

 Trias, 585. 

 Wealden, 588. 

 Fountain, Circulating, 453. 

 Fracture, attribute of minerals, 433. 

 Franklin, Experiments of, 205. 

 Fraunhofer, Discovery of, 143. 

 Freezing machinery, 363. 



,, mixtures, 89. 

 Friction, Definition of, 40. 



,, Inertia and, 35, <tf sq. 

 Frogs, Electrified, 217. 



Tree, n. 



Fruit, Definition of, 684. 

 ,, How formed, 683, 

 Fruits produced by one carpel, 605. 



,, several, 685. 

 Fulgarites, 644. 

 Fungi, 690. 

 ,, Destructive, 690. 

 ,, Edible, 691. 

 ,, Propagation of the, 692. 

 Fusee, The, 481. 

 Fusion, Definition of, 88. 

 Future ages, The, 599. 



Galaxy, The, 553. 

 Galena, Use of, 401. 

 Galileo, Tube of, 148. 

 Galleries, Whispering, 172. 

 Galvani, defeated by Volta, 218. 



,, Discovery of, 217. 

 Galvanometer, Astatic, 227. 

 Pungent, 227. 



Galvanometer, Use of the, 223. 

 Galvanoscope, The, 227. 

 Game, The needle, 729. 

 Games, Mathematical, 726. 

 Garnets, Minaral nature of, 442. 

 Gas, Coal, 375. 

 ,, companies' profits, 377. 

 ,, Definition of, 4. 

 ,, harmonicon, The, 351. 

 ,, Laughing, 361. 

 Marsh, 347. 

 Gases, Liquids and, 44, 

 Gauges, Rain, 638. 

 Gazogene, Use of the, 373. 

 Gemini, Constellation, 537. 

 Gems, The precious, 443. 

 Generation of heat, 77. 

 Generator, gramme, The, 268. 

 Geography, Geology and, 564. 

 ,, Physical, 60 1. 



,, Sources of, 603. 



Geologists, Apparatus for, 17. 

 Geology, what it teaches, 565. 

 Germany, experiment in, 13. 

 Geysers, The, 605. 



Theory of the, 84 

 Ghost, Pepper's, 138. 



,, stories, 161. 

 Ghosts, Explanations about, 161. 



,, substantial, 142. 

 Gilding, Processes of, 407. 

 Glacial period, Cause of the, 595. 



The, 595. 



Glaciers, Ice-rivers and, 606. 

 Glass, Facts about, 384. 



,, perforated by electricity, 215. 

 Glauber's salt, 393. 

 Globe, Motion of the, 504. 



,, Spherical form of the, 504. 

 Globes, terrestrial, Use of, 562. 

 Gold, Nuggets of, 407, 447. 

 ,, resists acid, 325. 

 , , the king of metals, 325. 

 Goniometer, Use of the, 431. 

 Gramme generator, The, 268. 

 Grapes, method of pieserving, 768. 

 Grapes, Room for preserving, 768. 

 Graphite, Plumbago or, 370. 

 Gravitation, Force of, 4, 486. 



,, Laws of, 2. 



Gravity, Centre of, 25. 

 ,, less in the air, 24. 

 , , same in all bodies, 24, 

 Green fire, 393. 

 Grit, Millstone, 581. 

 Grotto del Cave, The, 374. 

 Gulf Stream, The, 618. 

 Gum, 418. 



Gymnotus, Electricity of the, 284. 

 Gyroscope, Principle of the, 277. 



The, 742. 

 The electric, 743. 



Hail, Dew and, 641. 

 Halos, Lunar, 648. 

 Harmonograph, Construction, 175 

 Havre, Mirage at, 19. 

 Heat, a series of vibrations, 74. 

 Absorption of, 75. 



,, Conduction of, 89. 



,, Definition of, 72. 



, Development of, 77. 



, Expansion by, 81, 82. 



, Generation of, 77. 



, How to study, 75. 



, Latent, 89. 



, light and, Connection of, 94. 



, Mechanical equivalents, 74. 



Heat, Material theory of, 72. 



produces changes of state, 89. 



Radiant, 90. 



Reflection and refraction, 92. 



Science of, 72. 



Sources of, 77. 



Specific, 88. 



spectrum, The, 146. 



the movement of particles, 91. 



Theory of, 72. 

 History, Natural, 4. 

 Holland, Sailing on land in, 463. 

 Home-made aquarium, A, 9. 

 Hope, Mathematical, 727. 



,, Moral, 727. 

 Horn, Alexander's, 183. 

 Hornblend, 439. 



Horoscopes, Early study of, 467. 

 Horses, Electric government of, 250. 

 Houdin's clock, 752. 

 Household, Scientific objects for, 747 

 Hydraulic Lift, The, 71. 



,, press, The, 61. 

 Hydraulics, 70. 



Hydrogen, Apparatus for, 322. 

 ,, Bubbles of, 351. 

 ,, How to generate, 350. 

 Hydrometers, Table of, 420. 

 Hydrophilus, The, 10. > 



Hydrostatics, Principles of, 61. 

 Hydrozoa, The, 708. 

 Hymenoptera, The, 721. 

 Hypnotism, 13. 



Ice, How to freeze, 76. 

 ,, The age of, 595. 

 Ice-rivers, Glaciers and, 606. 

 Ice-yachts, Canadian, 463. 

 Iceland, Geysers in, 605. 

 Igneous rocks, 571. 

 Illusions, Optical, 116. 



,, ,, More about, 129. 



Images, Accidental, 112. 

 Implements, Neolithic, 598. 



Palaeolithic, 598. 

 Inclination, Magnetic, 256. 

 Indicator, Use of the celestial, 558. 

 Inertia, Definition of, 5. 

 ,, Experiments in, 37. 

 ,, Friction and, 35, et sq. 



Laws of, 35. 

 Inflorescence, 679. 



Varieties of, 680. 

 Infusoria, Divisions of the, 707. 

 ,, How to capture, 15. 

 ,, Origin of, 707. 



Study of, 7. 

 Inks, how made, 414. 

 Insects, 717. 



Anatomy of, 717. 

 Collection of, 8. 

 Eyes of, 718. 

 Feet of, 718. 

 Orders of, 720. 

 Palace for, 10. 

 Preservation of, 8. 

 Transformations of, 719. 

 Insulators, electric, List of, 210. 

 Integrator, Boys' mechanical, 264. 

 Intensity of sound, 171. 

 Iodine, 368. 

 Iron age, The, 598. 

 Bar, 397. 



Mineral nature of, 443. 

 Ores of, 444. 

 Pig or cast, 397. 

 Pyrophoric, 322. 

 unites with oxygen, 321. 



