INDEX 



443 



CUR 



Curtain for a lantern, 16 

 Curtain slide, 122 

 Curves, magnetic, 395 

 Cut-off jets, 117 

 Cycloidotrope, the, 145 

 Cyclosis in Vallisneria, 200 

 Cylinders for gas, 82, 84 

 Czerniak's cardioscope, 236 



DAHNE, Herr, on soap-films, 325 

 Dallinger, Dr., on drawings for the 



lantern, 413 

 Dancer, Mr., and dissolving taps, 



107 



Darkness, value of, 178 

 Decomposition of water, 408 

 Delezenne polarisers, 346 

 Demonstrating lanterns, 153 

 Demonstrations, physical, in gene- 

 ral, 212 ; microscopical, 190, 

 208 ; physiological, 230 

 Designs for polarised light, 354 ; 

 extraordinary difference in phe- 

 nomena, 370 

 Deviation, minimum, in prisms, 



283 



Dew, troubles from, 16, 116 

 Diagrams for the lantern, 411 ; 



printed, 414 

 Diamagnetism, 395 

 Diameter of condensers, 23 ; ob- 

 jectives, 31 



Didymium, spectrum of, 306 

 Diffraction, 334 

 Diorama, a lantern, 143 

 Dioramic effects, 103, 119, 143 

 Direct prisms for projection, 293 

 Disc, size of, 112; even illumina- 

 tion of, 115, 214 

 Discharge, static, 399 

 Dispersion, 282 ; anomalous, 295 

 Dissolving taps, 106; connections 

 of, 108, 114 ; adjusting, 108 ; 

 triple, 120 



Dissolving views, 103, 106 

 Distances, table of, 112 

 Dolbear, Prof., on opeidoscope, 



26* ; diffraction, 338 

 Doppler's principle, 254 



Double combination objectives, 28 

 Double refraction, 349 

 Drawing-paper as a screen, 127 

 Drawings for the lantern, 411 

 Duboscq lantern, 155 ; lamp, 162 

 Du Motay and zirconia, 68 



EDELMANN'S spectrum-burner, 307 

 Edison and Swan's lantern-lamp, 



40 



Effects, lantern, 122 ; slides, 140 

 Elasticity, 215, 220 

 Elbow polariscope, 338 

 Electricity, static, 396; current, 



400 

 Electric currents in living tissue, 



239 ; lamps, 40, 163, 425-431 ; 



lanterns, 158 ; microscope, 206 

 Electrolysis, 408 

 Electro-magnetism, 395, 405 

 Electrometer, Prof. Mayer's, 397 

 Electroscopes, 212, 397 

 Endosmose, 224 



Enlarging field of projection, 218 

 Enriched gas, for lime-light, 100 ; 



for acoustic flames, 269 

 Erecting prism, 170 

 Erection of screen, 128, 131 

 Ether light, the, 91, 97, 419 

 Evaporation, 388 

 Even films for polarisation, 356 

 Even illumination of disc, 115, 214 

 Exhibition, work at an, 113 

 Expansion by heat, 385 

 Experiment, method and scale of, 



215 



Experimental lantern- slides, 144 

 Experiments, lanterns for, 153 

 Explosions, 51, 54, 90, 93 

 Eye -pieces for projection-micro- 

 scope, 188 



FARA.DA.Y glass, magnetic rotation 

 in, 375 



Fatty oil lamps, H4 



Feathers, diffraction by, 335, 317 



Fencing-off apparatus at exhibi- 

 tions, 114, 133 



