INDEX 



445 



IKI 



Iridescent glass, 331 



Iris diaphragm, use of, 202, 210,212 



Ives, Mr., and the ether light, 95 



JETS, improving, 60 ; oxy-spirit, 

 46 ; oxy-gas or safety, 47 ; mixed, 

 51, 59; best form of, 62, 63; 

 attachment and fixing, 66 



Jewsbury, Mr. S., on fluorescence, 

 319 



KALEIDOPHOXE, 252, 266 

 Kaleidoscope, lantern, 145 

 Kaleidotrope, the, 144, 338 

 Kerr, Dr., on magnetic rotation, 



376 ; electrostatic stress, 398 

 Kingsley, Eev. W., and projecting 



microscopes, 180 

 Konig's manometric flames, 269 

 Kiihne's surface-tension experi- 

 ment, 407 



Kundt's dust-figures, 273 

 Kymographion, Ludwig's, 239 



LAMPS, oil, 34, 417 ; petroleum, 36, 



417 ; gas, 40, 418 ; spirit burner, 



418 ; acetylene gas, 419 ; electric, 

 40, 163; for lecturers, 132, 178 



Lantern, choice of a, 111 ;. stereo- 

 scope, 438 



Lantern, parts of a, 13 



Lantern-box, the, 134 



Lantern-microscope, the, 179 



Lantern-slides, see Slides 



Lanterns, single, 101 ; bi-unial, 109 ; 

 tri-unial, 118 ; demonstrating 

 and scientific, 153, 432 



Leakage in gas-bags, 42 



Lecturer's lamp, 132, 178 



Lengthening tubes, 33 



Lens, action of a, 5 



Lenses for projecting physical 

 apparatus, 175 ; ornni focal, 433 



Lever slides, 142 



Lieberkiihn, 201 



Light (lamp) for a lecturer, 132, 178 



Light, experiments in, 294-385; 

 rays of, 1 ; reflection, 274, re- 



MEM 



fraction, 278; dispersion, 282; 

 composition of, 285; spectrum, 

 304 ; fluorescence, 317 ; inter- 

 ference, 321 ; polarisation, 349 ; 

 identity with heat, 392 



Light (radiant), adjusting the, 

 115 ; for kaleidoscope, 146 ; for 

 microscope, 197 



Lightning, slide for, 141 



Lime-light, the, 42 



Limes, 47, 50, 68 ; substitutes for, 

 68 



Lime-shield, Wood's, 66 



Lime-tongs, 71 



Lime-turning movements, 60, 64 



Line spectra, 306 ; reversed, 310 



Lippmann's capillary electro- 

 meter, 240, 408 



Liquids, expansion in, 386 



Lissajous' figures, 255, 258, 352 



Living objects for microscope, 

 204 



Lodge, Dr. 0., oscillating character 

 of static discharge, 400 



Lubricating taps, 109 



Luminous cascade, 280 ; paint, 

 320 



Lycopodium for halos, 335 



MACH'S acoustic experiments, 273 ; 

 revolving polariscope, 371 



Magnetic curves, 395 



Magnetism, 394 



Management of lime-light, 71 ; of 

 an exhibition, 113 



Manipulation of lanterns, 101 



Mann, Dr. J. D., and reed project- 

 ing apparatus, 262 



Manometric flames, 269 



Marey's recording apparatus, 234 



Marking slides, 117 



Marriotte's law, 229 



Masks for mounting slides, 415 



Mason, Mr., and screens, 126 



Mayer, Prof. A. M., and Doppler's 

 principle, 254 



Mechanical slides, 140, 230 



Melde's experiments, 267 



Membranes vibration in, 268-272 



