Burton, Frances B., I, 374. Busby, R., II, _313_. Buteo, I, _51_. Butler, G., I, _199_. Butler, S., II, _218_. Buxton, J., I, _86_. Byrgius. (_See Buergi._) Byrne, O., I, _329_; II, 186, 190. Byron, I, 186; II, 270, 273. Cabbala, I, 272. Calculating Boys, I, 86. Calculus, I, 129. Calendar. (_See Easter._) Cambridge Poets, II, 269. Campanus, I, 42, _43_. Canning, Geo., II, _145_. Carcavi, I, _106_. Cardanus, II, _59_. Carlile, R., I, _271_. Carlyle, T., II, _373_. Carnot, I, 107. Caroline tables, I, 124. Casaubon, I, _111_. Case, J., I, _128_, 128. Cassini, J., I, _172_. Castel, I, _148_, 148. Castiglioni, I, _139_. Castlereagh, I, 185, _186_. Cataldi, I, _69_, 69. Catcott, A., I, _237_. Causans, de, I, _298_. Cavalieri, I, _106_. Cavendish, C., I, _106_; II, 299, 312. Cavendish, W., I, _290_. Caxton, W., II, _281_. Cayley, A., II, _292_. Cecil, R. (1st Earl of Salisbury), II, _330_. Centrifugal force, II, 268. Ceulen. (_See Van Ceulen._) Challis, J., I, _390_; II, 141. Chalmers, I, _102_; II, 219. Chambers, E., II, _282_. Chambers, R., I, _344_, 344. Charles IX, II, 94. Charles X, II, 1. Chasles, I, _39_, 229. Chesterfield, Earl of (4th), II, _298_. Chiffinch, W., II, _50_. Ch'in Chiu-shang, II, 66. Chitty, J., II, _323_. Chiu-chang, Suan-shu, II, 67. Christian Evidence Society, I, 270. Christie, I, 27. Christmann, I, 272, _272_. Church question, I, 62. Church, The word, II, 30. Circle squarers. (_See Squaring the Circle._) Circulating media of mathematics, I, 107. Ciruelo. (_See Sanchez._) Clairaut, I, _219_, 382. Clarence, Duke of, I, 179. Clarke, R., I, _255_. Clavius, I, 11, _69_, 111, 112, 335, 362, 363, 372; II, 59. Clayton., Geo., II, _98_. Cluvier, D., II, 332, _332_. Cobb, Mary, II, 117. Cobbett, W., I, _177_, 200, 399. Cobden, R., II, 217. Cocker, I, _42_; II, 64, 173, 251, 307. Cody, P., II, 208. Coke, E., II, _331_. Colburn, Z., I, _86_. Colenso, I, _63_, 247; II, 191. Collins, J., I, _107_; II, 297, 300, 302, 313. Colvill, W. H., II, 68. Cometic astrology, I, 128. Comets, I, 128; II, 68, 83. Cominale, C., I, _162_, 162. Compton, S. J. A., II, _19_. Computation, Paradoxes of, II, 251, 267. Condamine, C. M. de la, II, _301_. Conduitt, John, I, _397_. Conduitt, Mrs., I, _136_. Congregation of the Index, I, 90. Converse propositions, I, 295. Convocation at Oxford, I, 96. Cooke, Margaret, I, _310_. Cooper, A. A. (Shaftsbury), II, _181_. Copernicus, I, 5, 6, _76_, 90, 121, 172, 380; II, 165, 335. Copley, J. S., I, _198_. Cormouls, I, 225. Cosmology, I, 172. {378} Cotes, R., II, _301_. Cottle, Mrs., II, 97, _97_, 161. Craig, J., I, _129_, 129. Creed, Mathematics of a, I, 329. Cribb, T., I, _314_. Crotus, J., I, 318. Cruickshank, G., I, _186_. Cube, Duplication of, I, 349. Cumyns, Eliza, I, 299. Cunningham, I, 172, _172_.