INDEX. 



A. 



Absorbent media, action of I'.i7 



Absorption of chemical rays 2.". I 



of radiant heat 200 



" of radiations, necessity of. 186 



Achromaticity of camera 210 



Actinic rays 130-132 



Adhesion and capillary attraction. . . 346 



Air in interior of Hame G8 



Albertns Magnus on phosphores- 

 cence I.'!."., 1 "!> 



Alchemy 313-315 



Alcohol flame spectrum, analysis of. ,V"> 



Allotropism in living beings 375 



its successive stages. ... 310 



" of chlorine L'st 



Analogies of heat and chemical rays. 230 



Angstrom's discovery 186 



" law 428 



Animal and flame, analogy of. 18i) 



Animals, circulation in 370 



Antagonism in spectra 1S 



Anthracite, burning, analysis of ~>7 



Arseninretted hydrogen 55 



Arterialization of blood 378 



Atmospheric lines 75 



Attraction, capillary 34 '2 



B. 



Baldwin's phosphorus 134 



Bancalnri's experiment l.MI 



Becquerel on rayons continuateurs. . . 278 



on ultra red lines 7'.t 



Bending of stems of plants I 1 :; 



Bcr/.elius on allotropism :'.?'> 



on carbon compounds .'{():{ 



Bitumens and resins 40S 



Blood, arieriali/.ution of :',7> 



Blow-pipe flame 68-G9 



Bolognian stone 1 34, 1(?(J 



Boracic acid, spectrum of. .".." 



Bouguer's photometric method.. . .'!'.. l.'.i; 

 " " criticised 



l.y Mel- 

 loni.... 49 

 Boyle, experiments of, on diamond. . !:;."> 



" on movements in solids 343 



Brewster's experiments, criticism on. 36 



Bromide of silver as test 202 



Bromine cannot decompose water. . 11.'. 

 Bubbles, soap, endosmosis through. 



Budde on chlorine 427 



Bunsen and Koscoe, experiments of. 4211 



" " " quoted 



Burning glasses and mirrors... 436-441 



" driven by clock 443 



C. 



Calcium light, radiations of 320 



Calorific hypothecs of vision 102 



( 'amplior, experiments with 20.'5 



Canton's phosphorus I .'{(! 



Capillary attraction .".12 



" " an electric phe- 

 nomenon 346 



Carbon, allotropism of 



" nucleus in vision KC. 



" solid, disengaged in flame .. ii" 

 Carbonic acid decomposed l>y color- 

 ed solutions 172 



" deconpo>ed l>y light., hi; 

 ". " decomposed in spec- 

 trum it;:*. 4in 



Carbonic oxide, spectrum analysis 



of '. 



Carbuncle, legend of. 133 



Chemical force, distribution of, in 



spectrum 404 



" hypothesis of vision !>." 



" radiations, absorption of. . 2>1 

 " rays,action of silver iodide 



on 



("hlor-hydrogen jihotometer 24." 



Chlorine and hvdrogen. relation to 



light 24s. _-_'. 12.-,, 4:U 



Chlorine, active and inactive 271 



" duration of its moditica- 



tion 27:'.. _'-::. :'.i:: 



indigo rays absorlied by. . 



its allotropi>m 2-1 



in nlitii-d 271 



substitutes hvdrogen 



two stages in its modifica- 

 tion 



" water decomposed by ... 

 Chlorophnne, its phosphorescent prop- 

 erly 141 



