KEY AND INDEX 



Arban, M., his record flight in a 

 balloon, 7, 256. 



Arcadius, public windmills ap- 

 peared in Rome about the 

 time of this ruler, 6, 71. 



Archaeology, The New Science 

 of Oriental, Chapter X, 4, 

 287. 



Archer, Frederick Scott, in- 

 vented the collodion plate, 8, 

 230. 



Archimedes, invented many me- 

 chanical contrivances, 1, 197; 

 the Archimedian screw, ibid.; 

 his devices for the defence 

 of Syracuse, 1, 198; his com- 

 bination of multiple pulleys, 

 1, 200; his invention of the 

 catapult, 1, 201; his con- 

 trivance for wrecking galleys, 

 1, 202; 6, 34; the mythical 

 legend of the burning-glass, 

 1, 205; his studies of the 

 properties of the lever, 1, 206; 

 his experiment with King 

 Hiero's crown, 1, 207; his 

 demonstrations of the buoy- 

 ancy of water, 1, 208; the 

 problem of the triangle and 

 a circle, 1, 209; his crude 

 conception of the idea of 

 logarithms, 1, 210; his as- 

 sumption about the size of the 

 sun and earth, ibid., his com- 

 putation about the number of 

 grains of sand that would be 

 required to cover the sphere 

 of the sun's orbit, 1, 211; 

 recorded laws of the lever, 

 realized possibilities of, 6, 

 30; classical remark regard- 

 ing moving of world, 6, 31. 



Argand, Aim6, his invention of 

 the oil lamp with a circular 

 wick, 6, 205. 



Argon, discovery of, 6, 85, 86. 



Argus, the attack on, by Ful- 

 ton's submarine, 7, 101. 



Aristarchus, of antiquity, 1, 

 218, 220, 221. 



Aristotle, his name a synonym 

 for Greek science a thousand 

 years after his death, 1, 182; 

 his acceptance of the doctrine 



of his spherical figure of the 

 earth, 1, 183; a pathfinder in 

 the science of zoology, 1, 185; 

 his divisions of the verte- 

 brates and invertebrates are 

 accepted by every one to-day, 



1, 186; his classification of 

 blood-bearing animals and 

 fishes not far afield from 

 modern divisions, 1, 187; 

 considered manual toil de- 

 grading, 6, 26. 



Arkwright, Sir Richard, his 

 development of the spinning 

 frame marked the beginning 

 of the new era, 6,21; his early 

 life, 9, 26; aided by a Mr. 

 Strutt he interests capitalists 

 in his invention, 9, 27; capi- 

 talists combine to defraud 

 him of his patents, 9, 28; 

 court decision finally rendered 

 against him, 9, 30; traits in 

 his character, 9, 31. 



Armature, see Dynamo, 6, 173. 



Armature, ring, invented by the 

 Italian, Picnotti, 6, 179; 

 re-invented by Gramme, 6, 

 179. 



Armstrong, Lord, his water 

 motor, 6, 121. 



Arnald of Villanova, physician, 



2, 34- 



Artificial Gems, 9, 327. 



Artificial Stone, or Concrete, 

 Chapter VIII, 9, 182. 



Artificial Stone, or Concrete, the 

 manufacture of, 9, 182; con- 

 crete blocks, 9, 184; mixing 

 the materials, 9, 187; mold- 

 ing the blocks, 9, 189; utility 

 and beauty, 9, 193; rein- 

 forced concrete construction, 

 9, 195; advantages of rein- 

 forced concrete, 9, 197; 

 strength and durability of 

 concrete, 9, 201; the rein- 

 forcing skeleton of metal, 9, 

 204; a modern building, 9, 

 205. 



Arzachel, "trepidation of the 

 fixed stars," 2, 16. 



Assyria, Science of Babyloma 

 and, Chapter III, 1, 56. 



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