INDEX 



Physical diagnosis, Corvisart 

 lays the foundation of, iv. 199; 

 overthrows depletive methods 

 of, iv. 203. 



Physicians, in the early Roman 

 days, i. 273; special laws 

 enacted to protect, i. 275; 

 exempted from taxes and 

 military service, i. 276. 



Physiology in the nineteenth 

 century, iv. 102-139. 



Piazzi, an Italian astronomer 

 who discovered the planet 

 Ceres, iii. 40. 



Pinel, Dr. Philippe, leader in 

 reforms for the care of insane, 

 iv. 245; liberation of the 

 inmates at the Bicetre and 

 the Salpetriere, iv. 246. 



Piorry's method of mediate per- 

 cussion, iv. 203. 



Pitch-blende, a radio-active sub- 

 stance, v. 98. 



Pithecanthropus erectus, the fos- 

 sil of the ape-man found by 

 Dr. Dubois in the island of 

 Java, iii. 113. 



Plagues, their influence on me- 

 diaeval medical science, ii. 33, 



4i- 



Planche, Gaston, his invention 

 of the electric storage battery, 

 iii. 246. 



Plato, his visit to Egypt to 

 study the mysteries of its 

 fabled learning, i. 56, 84; the 

 greatest thinker and writer of 

 his time, i. 180; a mystical 

 dreamer and sociologist, i. 

 182. 



Pleiades, an actual federation of 

 associated stars, iii. 59. 



Plinius Secundus, the most fa- 

 mous Latin writer of antiquity, 

 i. 265; soldier and investiga- 

 tor, i. 266. 



Pliny, his unbounded respect for 

 Oriental learning, i. 56. 



Plutonists, a name given to the 

 followers of Hutton, iii. 131. 



Polonium, discovery of the radio- 

 active properties of, v. 101. 



Pouchet, M. F. A., belief in 

 spontaneous generation, iv. 

 180. 



Predynastic period, the, i. 28-30. 



Prehistoric man, the, i. 29. 



Prehistoric science, not a con- 

 tradiction of terms, i. 3; the 

 distinctive prehistoric and his- 

 toric epochs, i. 26, 27. 



Prestwich, his conclusions in 

 regard to the flint instruments 

 in the collection of M. de 

 Perthes, iii. 101. 



Prevention and cure of cholera 

 by inoculation, v. 184. 



Priestley, Joseph, important dis- 

 co venes of, iv. 1 8; flight from 

 French mob, iv. 19 ; oxygen his 

 greatest discovery, iv. 20; re- 

 fusal to reject the phlogiston 

 theory, iv. 36; experiments in 

 the mysteries of respiration, 

 iv. 93. 



Primitive man, our knowledge of, 

 i. 6; he observed that the sun 

 gives heat and light and the 

 moon and stars light only, i. 

 7; noted the changing phases 

 of the seasons, ibid.; noted 

 that the sun, moori, and stars 

 move across the heavens, i. 8; 

 had some idea of the law of uni- 

 versal terrestrial gravitation, 

 i. 9; knew the facts concerning 

 the rigidity of solids and the 

 mobility of liquids, i. 10; knew 

 that friction produced heat 

 and fire, i. n; practised in- 

 stinctive therapeutics, i. 13; 

 idea of death, i. 15; had 

 vague conceptions of an end- 

 less life, i. 18; ideas of psychol- 

 ogy, mathematics, and politi- 

 cal economy, i. 19; knew what 

 was essential to communal 

 harmony, i. 21; his basal 

 principles are the foundations 

 of modern science, i. 22; had 

 "innate" ideas of a future life, 

 i. 23; owes a debt of gratitude 

 to his barbaric predecessor, i. 

 24. 



293 



