INDEX. 



615 



BAG 



BACON, FKANCIS, persecution 

 of, 270 



Koger, persecution of, 270 

 Bailey's researches on the density 



of the earth, 107 

 Balance, experiments with by 



Lavoisier, 475 

 Balard's discovery of bromine, 



506 

 Balfour Stewart's suggestions of 



new researches, 469-470 

 Ball, metallic, rotation of by means 



of heat, 494 

 Balloons, discovery by means of, 



566-567 



Barometer, invention of, 474 

 Barrett's discovery of the heat 



evolved by molecular change of 



iron, 519, 548 

 Bartolinus's discovery of double 



refraction of light, 224, 565-566 

 respecting polarised light, 



488 



Basis of inference, 344, 448 

 Battery, Becquerel's, 485 



Daniell's, 485 



Grove's, 485 



Smee's, 485 

 Baumgartner's discovery of earth 



currents' in telegraph wires, 

 569 



Beccaria's discovery of the imper- 

 fect electric conducting power 

 of water, 534 



experiment with a magnetic 

 needle, 538 



Beccher and Stahl's theory of 

 phlogiston, 595 



Becquerel and Coulomb's disco- 

 very of magnetic repulsion of 

 wood, 494 



Becquerel's invention of the double 

 fluid battery, 485 



Beecher's enthusiasm in science, 

 258 



Belief, necessity of much false, 

 102, 112 



Beliefs, kinds of, 91 



sources of, 91, 103 



formation of, 92-94 



BOI 



Beliefs, contradictory, 93 



danger of ignorant, 97 



relation of to evidence, 100 



selection of, 99, 156-157 



unproved ones not necessarily 

 false, 152 



Bennett's discovery of electricity 

 evolved by sifting of powders, 

 535 



Bergmann and Scheele, 274 

 Bergmann's application of chemi- 

 cal tests, 540 



chemical discoveries, 540, 556, 

 579 



tables of ' elective affinities,' 

 597-598 



inference respecting the origin 

 of crystalline forms, 601 



Berthelot's calculation of com- 

 pounds of the alcohols, 30 



Berthollet's discovery respecting 

 chemical union and decomposi- 

 tion, 579 



Berzelius's discovery of selenium, 

 506, 518 



electro-chemical series, 593 

 Berzelius and Hisinger's discovery 



of electrolytic transfer, 554- 



555, 483 

 Bessel's experiments respecting 



the attraction of the earth, 526- 



527, 558 



Bidder, the ' calculating boy,' 41 

 Biot's discoveries, 478, ! 510, 527,606 

 Black's discoveries, 513, 529-530, 



540, 591 



Blind belief, 92, 95 

 ' experiments,' 115 

 Blood, discovery of the circulation 



of the, 509, 541 

 Bode's inference of a missing 



planet, 488, 587 



discovery of his law, 610 

 Boerhaave's excessive study, 259 



discovery of various essential 

 oils, etc., 539 



Bohnenberger's gold-leaf electro- 

 scope, 481 



Boiling-point of water, discovery 

 of, 479 



