INDEX. 



759 



Diphenyl-amine, 566 

 Disaccharides, 529, 533 

 Disinfectants, 457 

 Disinfection by formaldehyde, 491 

 Dispersion of light, 59 

 Displacement, 113 

 Dissociation, 172 



electrolytic, 189 



of acids and bases, 199 



of formic acid and its homologues, 

 507 



table of degree of, 203 

 Distillation, 53 



destructive, 453 



fractional, 462 

 Dithymol-diiodide, 575 

 Diuretin, 616 

 Divisibility, 28 

 Dolomite, 272 

 Donovan's solution, 351 

 Double decomposition, 113 



refraction, 63 



salts, definition of, 122 

 Drinking-water, 149 

 Drying oils, 525 

 Ductility, 26 

 Dulcin, 581 



Dulong and Petit's law, 107 

 Dumas method for determination of 



nitrogen, 445 

 Dyes, aniline, 564 



azo, 567 

 Dynamite, 488 



E. 



EARTH metals, 286 



summary of tests, 292 

 Earthenware, 289 

 Ebonite, 598 

 Ecgonine, 606 

 Effervescence, 152 

 Efflorescence, 152 

 Ehrlich's theory of immunity, 662 

 Elasticity, 26 

 Elastin, 628 

 Electric circuit, 76 



current, 76 



discharge through gases, 83 



energy, 72 



conversion of, 80, 82 



furnace, 80 



induction, 71 



insulators, 69 



light, 82 



motors, 78 



poles, 75 



spark, 71, 83 



units, 76 

 Electrical machines, 71, 78 



potential, 76 



tension, 76 

 Electricity, 69 



by chemical action, 74 



Electricity by magnet ism, 77 



conductors of, (>!) 



current, 72 



duality of, 70 



frictional, 69 



galvanic, 74 



nature of, 72 



negative, 70 



positive, 70 



resinous, 70 



static, 71 



vitreous, 70 



voltaic, 74 

 Electro-chemical equivalents, 197 



series of metals, 198 

 Electrodes, 75, 82 



polarized, 198 

 Electrolysis, 82, 195 



electromotive force required for, 

 198 



secondary changes in, 196 

 Electrolytes, 82 

 Electrolytic dissociation theory, 189 



solution tension, 319 

 Electromagnetism, 77 

 Electromagnets, 77 

 Electromotive force, 76 

 Elements, classification of, 125 



combining weights of, 95 



definition, 88 



metallic, 247 



classification of, 251 

 derivation of names, 247 

 melting-points, 248 

 occurrence in nature, 250 

 properties of, 252 

 specific gravity of, 249 

 tune of discovery, 249 

 valence of, 250 



natural groups of, 125 



non-metallic, 126, 135 



derivation of names, 135 

 time of discovery, 136 

 valence of, 136 



periodic system of, 128, 130 



physical properties of, 129 



relative importance of, 124 

 Emanation, 87 

 Emerald green, 504 

 Emery, 286 

 Empirical formulas, 446 



solution, 407 

 Emulsin, 578 



Emulsion, definition of, 152 

 Emulsions, 524 

 Enamel, 664 

 Endosmosis, 40 

 Endothermic actions, 91 

 Energy, 19 



chemical, 142 

 Enterol, 574 

 Enteroliths, 692 

 Enzymes, 456, 636 

 Eosin, 582 



