A HISTORY OF SCIENCE 



Bacon, Francis, influence on sci- 

 ence, ii. 192 ; indirectly a found- 

 er of the Royal Society, ii. 201. 



Bacon, Roger, ii. 4; his use of 

 lenses, ii. 45; supposed in- 

 vention of gunpowder, ii. 46; 

 estimate of his work, ii. 46. 



Bacteria, discovery of, ii. 179. 



Baglivi, Giorgio, distinguished 

 in medicine, iv. 182. 



Barometer, mercurial, invented 

 by Torricelli, ii. 122; statical, 

 invented by Boyle, ii. 205. 



Bastian, Professor, revived the 

 claims of Pouchet, iv. 180. 



Bay of Naples, the, fauna of, v. 

 124; abundance of material 

 for biological study found in, 

 v. 125 ; uses made of specimens 

 found in, in scientific study, 

 v. 128. 



Bayley, Dr., expert in spectro- 

 scopy, v. 83. 



Becquerel, M. Henri, discovery 

 of a radio-active substance, 

 v. 98, 99; "rays," v. 100. 



Beginnings of modern chemistry, 

 iv. 11-37. 



Behring's discovery of tetanus 

 and diphtheria antitoxine, iv. 

 242. 



Bell, Dr. (Sir Charles), discovery 

 of motor and sensory nerves, 

 iv. 249. 



Berlin Institute of Hygiene, 

 the, v. 193-202; work of Pro- 

 fessor Koch in, v. 194; work 

 of his successors in, v. 195; 

 department of bacteriology in, 

 v. 196; investigations of the 

 functions of the human body 

 in, v. 197; models in the 

 Museum of Hygiene, v. 198, 

 200; studies in problems of 

 ventilation, v. 200. 



Berlin Institute of Pathology, 

 the, v. 186-193; study of 

 diseases in, v. 187; studies of 

 organic action and cellular 

 activities in, v. 188; Virchow's 

 methods of teaching in, v. 

 191, 192. 



Berlin system of sewage-disposal, 

 the, v. 199. 



Bernard, Claude, studies of the 

 ductless glands, iv. 137; dis- 

 covers that the blood under- 

 goes a change in passing 

 through the liver, iv. 138; 

 discovers that the sympathetic 

 nerves regulate the blood 

 supply, iv. 259; his discovery 

 of inhibitory nerves, iv. 261. 



Berosus, a Babylonian historian, 

 i. 58. 



Berthez, Paul Joseph, champion 

 of the Vitalists* system, iv. 

 185. 



Berthelot's refusal to accept the 

 atomic theory, iv. 41. 



Berzelius, Johan Jakob, accepts 

 Dalton's theory, iv. 41-44; his 

 binary theory, iv. 53; his 

 dualistic theory, iv. 55; coined 

 the word "isomerism," iv. 

 62. 



Bessel, predicted the existence 

 of the planet Neptune, iii. 

 42 ; measured the parallax of a 

 star in 1838, iii. 60. 



Bianco, Signer Lo, chief of the 

 collecting department of the 

 Marine Biological Laboratory, 

 v. 122. 



Bichat, Marie Francois, studies 

 of the animal and organic 

 systems of vertebrates, iv. 107 ; 

 his division of anatomical 

 structures into sets of tissues, 

 iy. 108. 



"Biology," word coined inde- 

 pendently by Treviranus and 

 Lamarck, iv. 160. 



Biot, Jean Baptiste, investigated 

 the meteor of 1803, iii. 168; 

 accounted for it on scientific 

 grounds, iii. 169. 



Birch, a student of Egyptian 

 writing, i. 27. 



Black, Dr. Joseph, his latent 

 heat observations on the sub- 

 ject of precipitation of vapor, 

 iii. 182; disproved by Dr. 

 Wells, iii. 1 83 ; continues Hale's 



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