INDEX 



365 



Primes, 37. 



Probabilities and ir, 358. 

 Probabilities, Fallacies in, 30-32, 52. 

 Ptolemy, 298. 

 Purbach on it, 353. 

 Puzzles, Arithmetical, 4-36. 



— Geometrical, 62-81. 



— Mechanical, 84-93. 

 Pythagorean Symbol, 176. 



Quadrature or Cibcle, 346, 359. 

 Queen, Paths on Chess-boabd, 133, 



134, 135. 

 Queens Problem, Eiqht, 113-118. 

 Queens, Problems with, 113-118. 



Eacquet-ball, Cut on, 103-105. 



Bailway Puzzles (Shunting), 69-71. 



Eamification, 188. 



Eavenna, Labyrinth at, 186. 



Eayleigh, Lord, 103, 105, 106. 



Eeaumur, F. A. F. 164. 



Be-entbant Chess Paths, 122-134. 



Eegiomontanus on v, 353. 



Eeimer, N. T. 338. 



Beiss, M. 80, 181. 



Belative Motion, 87. 



Benton, W. 52. 



Bestobations of Digits, 248-253. 



Rhind Papyrus, 350. 



Eich, J. 317. 



Eichard, J. 87. 



Eichelieu, 298. 



Eichter on it, 357. 



Billy, A. 157. 



Bobert-Houdin, J. E. 278. 



Bockliff Marshes, Labyrinth at, 186. 



Eodet, L. on Arya-Bhata, 351. 



Boget, P. M. 122, 127-132. 



Bomanus on ir, 353. 



Bome, Labyrinth at, 186. 



Booh, Ee-entrant Path, 133-134. 



Eosamund's Bower, 184. 



Eosen, F. on Arab values of ir, 352. 



Bound Table, Knights of, 33. 



Boute Method in Ciphers, 296. 



Eoutes on Chess-boaed, 122-135. 



Bow, Counters in a, 62-64, 74-78. 



Buckle, C. 279, 281, 282. 



Budio, F. on ir, 346. 



Eussell, B. A. W. 85. 



Butherford on ir, 357. 



Safford, T. H. 278, 279. 



Saffron Walden, Labyrinth at, 186. 



Sailing, Theory of, 98-101. 



St Cyr Method in Ciphers, 307. 



St Laurent, T. de, on Cards, 235. 



St Omer, Labyrinth at, 186. 



St Vincent, Gregory of, 343. 



Salmon Net, String Figure, 327-328. 



Sauveur, J. 150. 



Scale of Notation, Denary, 10-11. 



— Puzzles dependent on, 11-14. 

 Sohool-gibls, Fifteen, 193-223. 

 Schooling, J. H. 10. 



Schub, H. 249. 



Schubert, H. on ir, 346. 



Schumacher, H. C. 277. 



Scripture, E. W. 264. 



Scytale, The, 300. 



Secret Communications, chap. xiii. 



Selander, K. E. I. on rr, 349. 



Seventy-seven Puzzle, 54. 



Shanks, W. on ir, 357. 



Sharp, A. on v, 356. 



Shelton, T. 316. 



Sherwin's Tables, 356. 



Shuffling Cards, 235-237. 



Shunting Problems, 69-71, 82. 



Sixteen Counter Problem, 64, 82. 



Sixty-five Puzzle, 52-53. 



Skeleton Cubes, 32. 



Smith, A. on ir, 359. 



Smith, D. E. 145. 



Smith, H. J. S. 42. 



Snell on ir, 354, 355. 



Solitaire, 80. 



Sound, Problem in, 107-108. 



Southwark, Labyrinth at, 186. 



Sovereign, Change for, 32. 



Spectrum Top, 108. 



Spin on a Cricket-ball, 105. 



Sporus on Delian Problem, 342. 



Squaring the Circle, 346-359. 



Stability of Equilibrium, 90-93. 



Statical Games, 62-69. 



Steen on the Mousetrap, 246. 



Storey on the Fifteen Puzzle, 224. 



Strabo on Lake Moeris, 184. 



Strachey, E. 140, 148. 



Strasznicky, 277, 278. 



Stbing Figures, chap. xv. 



— Tricks, 332-336. 

 Sturm, A. 338. 

 Suetonius, 315. 

 Super-Dominoes, 255-256. 

 Suter, H. 54. 

 Svastika, 185. 



Swift, J. 84. 

 Swinden, B. A. 27. 

 Sylvester, J. J. 63, 65, 222. 

 Symmetrical Magic Squares, 156. 



Tait, P. G. 25, 56, 57, 58, 75, 172, 176. 

 Tangrams, 69. 



Tanner, L. on Shuffling Cards, 235. 

 Tarry, G. 72, 157, 158, 177, 178. 

 Tartaglia, 2, 18, 24, 34, 71. 

 Taylor, B. 123. 



