INDEX. 



471 



Growth of plants in darkness 177 



" of plants in light 178 



Gnm on daguerreotype 225 



G un-barrel ignition experiment 29 



H. 



Heat distribution in spectrum... 100, 383 

 " effect of, on phosphores- 

 cence 159, 162, 165 



" invisible action of, on carbonic 



acid 183 



' measurement of, in spectrum. . 99 

 " radiation of, at different tem- 

 peratures 43 



" rays and chemical rays, their 



analogies 230 



Henry on phosphorescence 318 



Herschel on heat radiations 79 



" on photographic spec- 

 trum 418, 420 



" on spectrum scale 127 



Heumann on flame 60 



Horizontal element of flames ana- 

 lyzed 54, 61 



Huggins on nebula in Draco 32 



Hydrogen flame, spectrum analysis of 55 



" its relation to chlorine 294 



" substituted by chlorine... 306 



" union of, with chlorine 298 



Hypothesis of vision 101 



I. 



Ignited solids, their spectra 31 



Ignition of platinum, apparatus for.. 26 



" " '' on Laplace's co- 

 efficient 30 



Ignition, temperature of, by Davy 23 



" " by Newton. 23 



Incandescence, temperature of 23 



India-rubber, endosrnosis through... 357 



Inflammation, explanation of 380 



Ingenhousz, experiments of 180 



Intensity of light, effect of. 439, 448 



Interference of radiations. . . 92, 240, 454 



Inverse vision Ill 



Iodide of silver, its decomposition. . . 406 



Iodine cannot decompose water 445 



" corrodes daguerreotype plate. 228 

 Isinglass on daguerreotype plate 227 



J. 



Jamin, quotation from 85 



K. 



Kirchoff on fixed lines 84 



" on spectrum analysis 86 



Kunckel, the alchemist 134 



L. 



Lamansky on fixed lines 384 



Lavoisier, chemical theory of 52 



Le'rnery, theory of phosphores- 

 cence of. 137, 1 60 



Leyden spark 247 



Lime, incandescence of, compared 



with electric spark 320 



Light, action of, on daguerreotype. . . 235 

 decomposes chlorine water . . . 287 

 " intensity of, at different tem- 

 peratures 41 



" magnetism of 191 



" transference of energy 117 



Lunar photography 214 



M. 



Magnetism of light 191 



Mascart on cadmium 125 



Measuring lens 265 



Mechanical hypothesis of vision 108 



Melloni on heat radiations 129 



Melloni's critique 46 



Mercurialization of daguerreotype. . . 211 



Mercury, tides on 349 



Metals not phosphorescent 140 



Microscopic photography 338 



Millon on bleaching compounds 293 



" on carbon compounds 302 



Mirrors, action of light on 220 



Modified chlorine 271 



Moon, phosphorescent picture of. ... 162 

 " photographic picture of. . 213,214 



" rays of heat of. 131 



Mosotti on wave-lengths 112 



Muller on heat distribution 383 



N. 



Nebula3, spectra of 32 



Negative rays 87 



Newton on decomposition of light. . . 128 



" on temperature of ignition. . 23 



Nitrogenized bodies, allotropism of. . 379 



Nonentity., flame passes into 190 



O. 



Ocelli, their use in vision 102 



Octaves, effect of, in decomposition. . 124 



" several seen by eye 123 



Oil-flame, spectrum analysis of 55 



Optical qualities, control of. 238 



Organic matter, production of. 366 



Oxygen, combustion in 58 



P. 



Passive and active states of chlorine. 301 



" condition, effect of 4~>7 



Phantom images 207 



" subjective 107 



Phosphorescence 133 



Phosphorescent bodies, ignition of. . . 31 



" " their volume. 142 



