INDEX. 



845 



INS 



Instruments, optical, 519; reed, 389; 



mouth, 389 



Intensity of light, 421 

 Inten r al in music, 349 

 Iodine vapour, experiment with, 31 

 Iris, 515 



"AK, Leyden, action of, 625 

 Jet, electrified, 581 



TTALELDOSCOPE, 433 

 IV Kathode, 673 

 Keepers, 711 

 Key in telegraphy, 723 

 Key-note, 350 

 Kilogramme, 34 

 Kilogramme degree, 817 

 Kilogramme metre, 73 



IATENT heat of water, 824; of 

 i vapour, 825 



Laws of motion, experiments on, 49, 

 50, &c. 



Lead, disc of, rotating in vacua, 45 



Leidenfrost's experiment, 804: 



Length, unit of, 2 



Lenses, 466 ; convex, 469 ; concave, 

 478; formation of images in, 471 



Levels, 159 



Levr, 83 



Leyden jar, 620 



Light, reflection of, 427 ; velocity of, 

 410, 413; refraction of, 454; pro- 

 pagation of, 409 ; dispersion of, 480 ; 

 spectra, experiments on, 487 



Lightning-conductors, 646 



Lime-light, 507 



Linear expansion, coefficients of, 770, 

 838 



Liquefaction of gases, 808 



Liquids, buoyancy of, 188; conductivity 

 of, 814; diffusion of, 204; transmis- 

 sion of pressure of, 161 ; properties 

 of, 10; spheroidal state of, 804; 

 globular form of, 11 ; under the 

 action of centrifugal force, 144; sur- 

 face of, 158 



Lithium, spectrum of, 494 



Litre, 7 



Lodestone, 739 



Long-sightedness, 517 



Loss of weight in air. 221 



Lowering of temperature by evapora- 

 tion, 832 



Luminiferous ether, 410 



MOT 



MACHINE, Attwood's, 49 

 Machines, simple, 79 



Magdeburg hemispheres, 279 



Magic funnel, 258 ; disc, 547 



Magnetic attraction and repulsion. 707; 

 declination, 741; dip/ 742; equator, 

 742; induction, 711; needle, 739; 

 poles, 704, 741 



Magnetisation, 737; by the action of 

 the earth, 743 ; by currents. 704 



Magnetism, 735; the earth's, 740; Am- 

 pere's theory of, 705 



Magneto-electrical apparatus, 751 



Magnets, artificial and natural, 739 ; 

 action of earth on north and south 

 poles of, 741 ; portative force of, 737; 

 induction by, 736 



Magnifying power of microscope, 519 



Magnitude, apparent, of an object, 519 



Major chord, 351 



Manometric flames, 395 



Mariotte's law, 240, 243 ; experiments 

 on, 243, 244 ; applications of, 246 



Mariotte's bottle, 260 



Mass and force, 48 ; experiments on 

 action of force upon masses, 51, &c. 



Measure of force. 52, 53 ; of work. 73 



Measures for liquids, graduation of, 37, 

 38 



Mechanical equivalent of heat, 828 ; 

 effects of electric discharge, 639 ; 

 powers, 79 



Mechanics, 43 



Melting point, 787 



Meniscus, 38 



Mercury, expansion of, 760, 839'; how 

 to handle, 208 ; rain of, in vacua, 282 



Meridian, geographical and magnetic, 

 741 



Metal, Wood's fusible, 790 



Metals, conductivity of, for heat, 814; 

 for electricity, 559, 656 



Metre, 2 



Microscope, 519 



Mill, Barker's, 199 



Milligramme, 34 



Minor chord, 351 



Mirrors, 427 ; concave, 439 ; convex, 

 450 



Mixtures, freezing, 831 



Molecular forces, 33; in solids, 151; in 

 liquids, 204 ; in gases, 316 



Molecules, 33 



Monochord, 355; experiments with, 357 



Morse's telegraph, 720 



Motion, uniform, 60 ; uniformlv accele- 

 rated, 60 ; of translation, 43 ; vibra- 

 tory, 43 ; rotatory, 43 ; experiments 



