KEY AND INDEX 



Albany to New York, 7, 297; 

 cross-country flight by of- 

 ficers of the French Army, 7, 

 298; Hamilton's flight from 

 New York to Philadelphia 

 and return, 7, 298; Brookins' 

 altitude record, 7, 299; all 

 honor due the Wright 

 brothers, 7, 300. 



Ae'tius, Byzantine physician, 2, 

 31. 



Agamemnon, detailed by the 

 English Government to lay 

 the first Atlantic cable, 8, 34. 



Agassiz, Louis, his development 

 of the glacial theory, 3, 147; 

 his famous Etudes sur Us 

 Glaciers, 3, 154. 



Age, Rough Stone, 6, 8; Smooth 

 or Polished, 6,9; Bronze, 6,9; 

 Iron, 6, 9; of Steam, 6, 15; 

 of Electricity, 6, 15. 



Agriculture, methods at begin- 

 ning nineteenth century com- 

 pared with those at end, 6, 19. 



Air (see Atmosphere), experi- 

 ments with, in the seventeenth 

 century 4, 6; liquefied, 6, 45; 

 earliest use of as motive 

 power, 6, 62; properties of, 

 study by mechanical philoso- 

 phers, 6, 63. 



Air-pump invented by Von 

 Guericke, 2, 211. 



Airy, Sir G. B., his use of per- 

 manent magnets to effect 

 compensation for deviation of 

 the compass, 7, n; scepti- 

 cism regarding a transatlan- 

 tic cable, 8, 34. 



Albategnius, astronomer, 2, 15. 



Albucasis, Arabian writer on 

 surgery, 2, 25. 



Alchemy, 2, 124; the four ele- 

 ments, 2, 129; "killing" and 

 "reviving" metals, 2, 130; 

 Rosicrucians, 2, 136; Aurea- 

 crucians, 2, 136; tricks of 

 alchemists, 2, 138; useful 

 discoveries of alchemists, 2, 

 140. 



Alchemy and Astrology two 

 Pseudo Sciences, Chapter VI, 

 2, 124. 



Alcmaeon, the first Greek anat- 

 omist, 1,171; his explanation 

 of the sense of hearing, 1, 172; 

 his theories concerning the 

 heart and brain, 1, 126. 



Alexandre, telegraph of, 8, 9. 



Alexandrian or Hellenistic 

 Period, Greek Science of the, 

 Chapter IX, 1, 189. 



Alexandrian library not burned 

 by Arabs, 2, n. 



Alexandrian science adds a day 

 to every fourth year, 1, 36. 



Alfonso X., Alfonsine tables, 2, 



J 7- 



Alhazen, Arabian scientist, 2, 

 18; calculates height of at- 

 mosphere, 2, 19. 



Allen, Richard N., credited with 

 the invention of paper car 

 wheels, 8, 180. 



Almagest translated into Arabic, 

 2 >9 . 



Alphabet, the development of 

 the, Chapter IV, 1, 86; in- 

 troduction of letters, 1, 87; 

 Egyptian and Assyrian char- 

 acters, ibid.; first steps in 

 picture-writing, 1, 89; Egyp- 

 tian writing, 1, 90; Baby- 

 lonian writing, 1, 93 ; achieve- 

 ment of, 1, 98; extension and 

 perfection of, 1, 101. 



Aluminum, method of produc- 

 ing by the electrolytic process, 

 6, 300. 



Alyattus, king of the Lydians, 

 1, 103. 



Ame'lineau, a student of the 

 phonetic value of Egyptian 

 symbols, 1, 28. 



Amici, Giovanni, constructs a 

 reflecting microscope, 4, 112; 

 introduced the improved 

 microscope, 4, 113. 



Amos (with Bright) devised a 

 self-releasing brake for use in 

 cable-laying, 8, 37. 



Ampere, Andr6 Marie, dis- 

 covered the principles of the 

 science of electro-dynamics, 

 3, 239; and the law of com- 

 binations of volumes, 4, 43 ; 

 paved the way for the study 



[158] 



