KEY AND INDEX 



in the collection of M. de 

 Perthes, 3. 101. 



Priestley, Joseph, important 

 discoveries of, 4, 18; flight 

 from French mob, 4, 19; 

 oxygen his greatest discov- 

 ery, 4, 20; refusal to reject 

 the phlogiston theory, 4, 36; 

 experiments in the mysteries 

 of respiration, 4, 93; his 

 experiments with balloons, 



7, 230. 



Primitive books, 8, 99; five 

 primitive types, 8, 99; the 

 papyrus roll of the Egyptian, 



8, 100; the tablet of baked 

 clay, 8, 103 ; prism or cylinder 

 of clay used by the Baby- 

 lonians and Assyrians, 8, 105; 

 the palm-leaf books of the 

 Hindus, 8, 106; folded books, 

 8, 108; the text of ancient 

 books, 8, 112. 



Primitive man, our knowledge of, 

 1,6; he observed that the sun 

 gives heat and light and the 

 moon and stars light only, 1, 

 7 ; noted the changing phases 

 of the seasons, ibid.; noted 

 that the sun, moon, and stars 

 move across the heavens, 1, 8; 

 had some idea of the law of 

 universal terrestrial gravita- 

 tion, 1, 9; knew the facts 

 concerning the rigidity of 

 solids and the mobility of 

 liquids, 1, 10; knew that 

 friction produced heat and fire, 

 1, n; practised instinctive 

 therapeutics, 1, 13; idea of 

 death, 1, 15; had vague con- 

 ceptions of an endless life, 1, 

 18; ideas of psychology, 

 mathematics, and political 

 economy, 1, 19; knew what 

 was essential to communal 

 harmony, 1, 21; his basal 

 principles are the foundations 

 of modern science, 1, 22; had 

 "innate" ideas of a future 

 life, 1, 23; owes a debt of 

 gratitude to his barbaric 

 predecessor, 1, 24. 



Prince Rupert, erroneously ac- 



credited with invention of 

 the mezzotint, 8, 196. 



Printing and Making of Modern 

 Books, The, Chapter VII, 8, 

 119-158. 



Printing, Chinese credited with 

 the discovery of the art of, 

 8, 119; the first book printed 

 from movable types, 8, 120; 

 the father of printing, 8, 120; 

 the first printing-press ever in- 

 vented, 8, 120; improvement 

 made by William Blaew, 8, 

 122; press produced by the 

 Earl of Stanhope, 8, 122; press 

 invented by Isaac Adams, 8, 

 122; the cylinder press in- 

 vented by William Nicholson, 

 8, 123; practical solution of 

 "cylinder press" credited to 

 Friedrich Koenig, 8, 123; 

 Napier's cylinder press 

 equipped with grippers or 

 "fingers," 8, 124; the Ameri- 

 can printing-press without 

 a rival, 8, 124; the "stop 

 cylinder" invented by Dutar- 

 tre, 8, 125; the advent of 

 the type-revolving machine, 

 8, 127; the press invented by 

 Richard M. Hoe, 8, 127; in- 

 genious device patented by 

 Stephen D. Tucker, 8, 130; 

 a modern newspaper press, 8, 

 131; a perfected magazine 

 press, 8, 135; the "Rotary 

 Art" press for color printing, 

 8, 137; other aids to the 

 printer, 8, 139; the Mergen- 

 thaler linotype, 8, 142; Lan- 

 ston monotype machine, 

 8, 145; the graphotype in- 

 vented by J. H. Goodson, 8, 

 149 ; type-setting machines, 

 8, 150; the Dow type-setting 

 machine, 8, 151; the develop- 

 ment of book-binding, 8, 

 153. 



Printing-press (see also Print- 

 ing), its part in the develop- 

 ment of medical learning, 2, 



' iems, Some Unsolved Scien 

 tific, Chapter VIII, 6, 203. 



Probie 



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