GENERAL INDEX 



planet Pallas, 3, 40; his 

 explosion theory, 3, 41; his 

 opinion of the great comet of 

 1680, 3, 52. 



Oldfield, Barney, his record at 

 Ormonde, the fastest mile 

 ever made by an automobile, 

 7, 1 66. 



Olympic, passenger steamer of 

 the White-Star Company, 7, 

 90. 



Olzewski's experiment with 

 liquid oxygen, 6, 61. 



Opdyke, George, pioneer in the 

 wholesale manufacture of 

 clothing, 9, 78. 



Organic Evolution, Theories of, 

 Chapter VI, 4, 140. 



Organic matter, possibilities of 

 producing, out of inorganic, 

 6, 224. 



Organicists, system of, 4, 185; 

 theory of, 4, 187. 



Organism, animal, comprehen- 

 sive view of, 4, 137; economy 

 of the, 4, 138. 



Oriental Archaeology, The New 

 Science of, Chapter X, 4, 

 287-302. 



Oriental ecclesiasticism as a 

 cause of indifference to science 

 in the dark age, 2, 4. 



Origin and Development of 

 Modern Geology, Chapter III, 

 3, 116. 



Otis, Elisha G., introduced the 

 passenger elevator, 9, 164. 



Otto, Dr. N. A. (with E. Langen), 

 made important improve- 

 ment in piston arrangement 

 of gas engine, 6, 136; im- 

 proves gas engine by com- 

 pressing the explosive mix- 

 ture in the working cylinder 

 before igniting it, 6, 138; 

 the gasoline engine perfected 



by. I 57- 

 Otto cycle, as exemplified in 



gas engines, 6, 136, and 6, 



138. 

 Owen, Richard, discovers the 



Trichina spiralis, 4, 207. 

 Ox, domestication of, 6, 59. 

 Oxygen, liquefied by Pictet and 



Cailletet, 6, 42; Olzewski's 

 experiments in, 6, 61. 



PAGE, C. C., his efforts to pro- 

 duce a storage-battery car, 



7, 180. 



Paget, Tames, his discovery of 

 the Trichina spiralis, 4, 207. 



Painless dentistry, experiment 

 of Dr. Horace Wells in 1844, 

 4, 213. 



Paints, Dyes, and Varnishes, 

 Chapter XI, 8, 258. 



Paints, different from dyes and 

 varnishes, 8, 258; principle 

 of the process of levigation, 



8, 259; the importance of 

 water and the drying-oils, 8, 

 261; linseed-oil the most 

 important to the painter, 8, 

 262; turpentine most useful 

 for certain purposes, 8, 264; 

 methyl and ethyl alcohol 

 used extensively, 8, 264; the 

 pigments of antiquity, 8, 

 265; black pigments, 8, 267; 

 seq.; white pigments, 8, 274 

 seq.; some "chrome" pig- 

 ments, 8, 281; other yellow 

 mineral pigments, 8, 285; 

 some brilliant but poisonous 

 pigments, 8, 288; green min- 

 eral pigments, 8, 292; blue 

 pigments from the mineral 

 world, 8, 295; the brown 

 mineral pigments, 8, 302; 

 pigments from vegetable and 

 animal sources, 8, 303; the 

 coal-tar colors, 8, 311. 



Paleontology, The New Science 

 of, Chapter III, 3, 74-"5- 



Pancreas, the, discovery that 

 it plays a part in the process 

 of digestion, 4, 129; all-im- 

 portant in the digestion of 

 starchy and fatty foods, 4, 



Panhard, M. (with M. Levassor), 

 invents a modern gasoline 

 motor, 6, 140; applied the 

 Daimler motor to four- 

 wheeled vehicles and thus 

 developed the automobile, 7, 

 157- 



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