INDEX. 



617 



CAU 



Causes, methods of discovering, 

 421-423, 425 



how detected, 429, 430, 431, 

 434-435 



of unsuccessful experiments, 

 459 



unequal action of, 165 

 Cavallo's invention of the electric- 

 condenser, 481 



Cavendish's great accuracy, 253- 

 255 



discoveries, 511, 530, 540, 541, 

 544, 586 



experiments with the pneuma- 

 tic trough, 475 



Cerebral impressions, their inde- 

 structibility, 65 



Certainty, conditions of, 144, 145, 

 146 



scientific, different degrees of, 

 143 



Chains of causes, 406, 414, 430- 



431 

 Chalmers's ' Essay on the Modesty 



of True Science,' 246 

 Changes effected by heat, 34 

 Character of men of science, 241, 



242, 244, 246-249, 251, 252, 253, 



255-258 



of the scientific philosopher, 

 363 



Characteristics of truth, 153 

 Charcoal conducts electricity, 535 

 Chemical atoms, their complex 

 structure, 32 



combination of gases by vo- 

 lume, discovery of, 599-600 



composition of the sun, 578- 

 579 



decomposition, Bergmann's dis- 

 covery respecting, 579 



discoveries of Boyle, Berg- 

 mann, and Scheele, how made, 

 556-557 



effect of the voltaic current, 

 discovery of, 546-547 



origin of the voltaic current, 

 inference respecting, 502-593 



elements, false discoveries of, 

 135-137 



CLA ^^- 



Chemical atoms, prediction of 

 new, 524 



energy, hypothesis of two kinds 

 of, 521 



discovery of the loss of by 



chemical union, 556 

 -r- origin of the voltaic current, 



discovery of the, 537 



proportions of common acids 

 and bases, discovery of, 541 



tests, ^first application of, 540 



how discovered, 555, 571 



theory of multiple proportions, 

 discovery of, 508, 580 



union and decomposition, Ber- 

 thollet's discovery respecting, 

 579 



Chemistry, discovery of the mo- 

 dern theory of, 595-596 



Chenevix's mistake regarding pal- 

 ladium, 107 



Children's discoveries respecting 

 the fusion of refractory sub- 

 stances, 561 



Chladni's experiments on vibra- 

 tions and acoustic figures, 475, 

 543 



Chlorine, discovery of, 501-502, 

 556-557 



Choice, an act of the intellect, 131 



Christie's discovery respecting 

 magnetism, 539 



Chromic acid and chromium, dis- 

 covery of, 504 



Chronological order of the sci- 

 ences, 184 



Chronometers, discovery of the 

 effects of magnets on, 577-578 



Circular polarisation of light, dis- 

 covery of, 529 



Circulation of the blood, discovery 

 of, 509, 541, 571 



Circumstances, coincident, 444 



Clark's discovery of retardation 

 of electric signals in cables, 

 569 



Classes of scientific facts, 85 



terms, 79 



Classification, value of, 204, 209, 

 398 



