644 



INDEX. 



STA 



Stars, discovery of five hundred 

 double, 582 



of the chemical composition * 



of, 578-579 



of the laws of double, 516- 



517 



of unequally illuminated,565 



Starting-points of researches, 465 



Stas's discoveries respecting ato- 

 mic weights, 599 



Static conditions, discovery of, 

 435, 442, 443 



importance of, 435 



kinds of, 436-439 



Steel, discovery of the magnetisa- 

 tion of by a voltaic current, 537 



Stewart's suggestions for new re- 

 searches, 469-470 



St.-Hiliare's discovery of unity of 

 structure of vertebrate animals, 

 580 



Stokes's discoveries in fluores- 

 cence, &c., 491, 545 



Storms, discovery of magnetic, 570, 

 578 



Stromeyer's discovery of cadmium, 

 496-498 



Study and inference, discovery by 

 means of, 583 



limitations of advantages of, 

 304 



Substances, detection of, 393-394 



discovery by examining neg- 

 lected, 501 



rare, 505 



prediction of new elementary, 

 524 



Suggestions for new researches, 

 394, 469-470, 513-514, 563, 605 



Sulphate of nickel, discovery of 

 molecular change of, 553 



Sulphuric acid, discovery of fu- 

 ming, 551 



Sulzer's discovery of the earliest 

 fact in voltaic electricity, 535 



Sun, discovery of sodium vapour 

 around the, 578-579 



of spots on the, 566 



of the cavernous nature of 



the spots on the, 587 



TEE, 



Sun, discovery of the magnetic 

 influence of, 570 



great heat of the, 32 

 Svanberg's inference of the tem- 

 perature of space, 591 



Swan's discovery of the widely- 

 diffused presence of common 

 salt, 574 



Syllogistic inference, 349-351 



Sylvia's discovery of the loss of 

 chemical energy by union, 556 



Symbols, value of, 74 



Symmer's discovery of the de- 

 pendence of the two kinds of 

 electricity, 567 



re-discovery of two kinds of 

 electricity, 592 



Synthesis, discovery by, 217 



of the formation of water 



by, 557 



Sy t en, emf oyment of the, 475 

 Systems or classification, tempo- 

 rary chaacter of, 205-206 



fTlABLES of elective affinities,' 

 JL invention of, 597-598 

 Teaching, scientific, its influence 



on the p ower of research, 271 

 Telegraph hcables, discovery of 



electric c arge of, 285, 496 



invention of electro-magnetic, 

 537 



Telephone, the, 472 

 Telescope, invention of the,173,545 

 Temperature of boiling water, dis- 

 coveries respecting the, 529 



of space, the, 587, 591 



of the atmosphere in relation 

 to altitude, discovery of the, 

 566-567 



Tennant's discoveries, 505-506, 



518 

 Terms, danger of ambiguous, 76 



different kinds of scientific, 78 

 Terrestrial magnetic poles, relation 



of to temperature, 578 



magnetism, discovery of a con- 

 nection between the solar spots 

 and, 582 



