INDEX 



361 



Cartwright, W. 316. 



Caterpillar, String Figure, 330-331. 



Cai's Cradles, chap, xv. 



Cauchy, A. L. 61, 260. 



Cayley, A. 55, 59, 188, 245, 355. 



Cells of a Chess-board, 122. 



Centrifugal Force, 89. 



Ceulen, van, on 7r, 354, 355. 



Charcot, J. M. 279. 



Charles I, 316, 317. 



Chartres, Labyrinth at, 186. 



Chartres, E. 28, 51, 359. 



Chasles on Trisection of Angle, 346. 



Chess-board, Games on, 74-80, ohap. vi. 



— Problems, 74-80, chap. vi. 



— Knights' move on, 111. 



— Notation of, 109. 



— Recreations, chap. vi. 



Chess, Maximum Pieces Prob., 119. 



— Minimum Pieces Pbob., 119. 



— Number of Initial Moves, 110. 



— Pieces, Value op, 110-113. 

 Chifu-Chemulpo Puzzle, 70, 82. 

 Chilcombe, Labyrinth at, 186. 

 Chinese on «-, 352. 



Chinese Rings, 229-234. 

 Chippewa Release, String Trick, 333. 

 Ciccolini, T. on Chess, 129. 

 Ciphers, chap. xiv. 



— Definition of, 293 



— Four types of, 300-310. 

 Circle, Quadrature or, 346-359. 

 Cissoid, the, 340, 342, 348. 

 Clairaut on Trisection of Angle, 345. 

 Claus, 228. 



Clausen on w, 357. 



Clerk Maxwell, J. 5, 59, 108. 



Clifford, W. K. 87. 



Clocks, 96 



Cnossus, Coins of, 184, 185. 



Coat and Waistcoat Triok, 336. 



Coccoz, M. 46, 157. 



Code-Book Ciphers, 318. 



Code, Morse, 313. 



Colburn, Z. 269-271, 272. 



Cole, R. A. L. 262. 



Colebrooke, H. T. 299. 



Collini on Chess, 128. 



Collins, Letter from J. Gregory, 303. 



Colouk-cube Problem, 67-69. 



Colouring Maps, 54-59. 



Columbus's Egg Puzzle, 93. 



Comberton, Labyrinth at, 186. 



Compass Problems, 262-263. 



Conchoid, the, 340, 344, 348. 



Cones moving uphill, 93. 



Conrad's Tables, 302. 



Contour-lines, 59-60. 



Counters, Games with, 62-64, 74-80. 



Cox, James, on Clocks, 96. 



Cradle, String Figure, 331. 

 Cretan Labyrinth, 182, 184-185. 

 Cbicket-ball, Spin on, 105. 

 Cross-fours, 67. 

 Cryptographs, chap. xiv. 



— Definition of, 293. 



— Three types of, 294-300. 

 Cryptography, ohap. xiv. 

 Cube, Duplication of, 338-344. 

 Cubes, Coloured, 67-69. 



— Skeleton, 32. 

 Cudworth, W. on Sharp, 356. 

 Cumulative Vote, 33. 

 Cunningham, A. J. C. 40. 

 Curiosa Physica, 107-108. 

 Curl on a Cbicket-ball, 105. 

 Cusa on ir, 353. 



Cut on a Tennis-ball, 103-105. 

 Cutting Cards, Problems on, 17. 



D'Alembert, J. 28, 30. 



Darboux, G. 279, 282. 



Dase, J. M. Z. 276-278, 291, 357, 358. 



Davis, E. P. on Eirkman's Prob., 218. 



De Beni, Duchesse, 311. 



Decimation, 24-27. 



De Coatpont, 258. 



De Fonteney on Ferry Problem, 72. 



De Fouquieres, 63. 



De Haan, B. on ir, 349, 354. 



De Lagny on tt, 356. 



De la Hire, P. 147, 150. 



De la Loubere, S. 139, 151. 



Delannoy, 72. 



Delastelle, F. 292. 



De Lavernede, J. E. T. 129. 



Delens, P. 248, 249. 



Delian Problem, 338-344. 



De Moivre, A. 122, 123. 



De Montmort, 1, 123. 



De Morgan, A. 55, 84, 346, 348, 349, 



359. 

 Denary Scale of Notation, 10-11. 

 De Parville on Tower of Hanoi, 229. 

 De Polignac on Knight's Move, 133. 

 De Rohan, 318. 



Derrington, on Queens Problem, 118. 

 De St Laurent, T. 235. 

 Descartes, 343, 348, 356. 

 Diabolic Magic Squares, 150-156. 

 Diamandi, 279. 



Dickson, L. E. 38, 41, 42, 244. 

 Diego Palomino, 23. 

 Digby, Lord, 316. 

 Digit Questions, 247. 

 Digital Process, 285. 

 Digits, Missing, 248-253. 

 Diodes on Delian Problem, 342. 

 Diodorus on Lake Moeris, 184. 

 Diroks, H. 94, 318. 



