Cantor, G., 339, 362, 372.

Cantor, M., IX., X., 112.

Capelli, 330.

Capillarity, 278, 366, 388, 398.

Caporali, 313.

Cardan, 144; ref. to, 149, 152, 155, 156, 159.

Carll, 334.

Carnot, Lazare, 288, 289; ref. to, 56, 236, 293.

Carnot, Sadi, 399.

Casey, 313.

Cassini, D., 257.

Cassiodorius, 83, 118.

Casting out the 9's, 91, 106.

Catalan, E., 325.

Cataldi, 159.

Catenary, 191, 234, 237.

Cattle-problem, 73.

Cauchy, 331—333; ref. to, 243, 247, 264, 322, 324, 328, 330, 335, 338, 339, 341, 342, 345, 348, 349, 350, 353, 356, 362, 368, 383, 387, 388, 390, 393.

Caustics, 238, 241.

Cavalieri, 170; ref. to, 167, 193, 221.

Cavendish, 394.

Cayley, 325, 326; ref. to, XII., XIV., 291, 296, 297, 306, 308, 311, 313, 319, 324, 330, 346, 354, 355.

Centre of gravity, 177, 191; of oscillation, 191, 243.

Centres of osculation, 49.

Centrifugal force, 183, 192, 214.

Ceulen, van. See Ludolph.

Ceva, 290.

Chapman, 324.

Characteristics, method of, 297.

Chasles, 296–298; ref. to, X., 39, 47, 49, 52, 172, 289, 294, 306, 311, 313, 377.

Chauvenet, 377.

Chess, 92.

Cheyne, 206.

Chinese, 19.

Chladni's figures, 386.

Chree, 382, 391.

Christoffel, 325, 327.

Circle, 19, 24–28, 31, 41, 52, 154, 194; degrees of, 7, 271; division of, 329, 365.

Circle-squarers, 2, 19, 190, 316.

Cissoid, 50, 191.

Clairaut, 256–258; ref. to, 244, 252, 255, 262.

Clapeyron, 399.

Clarke, 341.

Clausius, 399; ref. to, 390, 398, 400–402.

Clavius, 155; ref. to, 154.

Clebech, 312, 313; ref to, XII., 296, 309, 315, 322, 327, 328, 333, 341, 342, 358, 381, 383, 390–392.

Clifford, 305. 306; ref. to, 297, 319, 324, 358, 378, 396.

Cockle, 315.

Colburn, Z., 180.

Colding, 398.

Cole, 330.

Colebrooke, 87.

Colla, 143, 145.

Collins, 203, 223, 227, 228, 230, 232.

Colson, 204.

Combinatorial School, 247, 335.

Commandinus, 153.

Commercium epistolicum, 206, 232.

Complex quantities, 292, 317. See Imaginaries.

Complex of lines, 309.

Computus, 118, 119.

Comte, X.

Concentric spheres of Eudoxus, 32.

Conchoid, 50.

Condensation of singularities, 362.

Conform representation of surfaces, 361.

Congruencies, theory of, 365.

Congruency of lines, 309.

Conic sections, Greek, 32, 34, 40, 41, 45–49, 55; Arabs, 101, 112; Renaissance, 153; Kepler, 168; more recent researches, 176–178, 192. See Geometry.

Conon, 40; ref. to, 42.

Conservation of areas, 253; of energy, 397, 398; of vis viva, 192.

Continued fractions, 159, 197. 252, 270.

Continuity, 169, 193, 226, 293, 333, 359, 372.

Contracted vein, 384.

Contravariants, 326.

Convergence of series, 334–339.

Co-ordinates, 185, 294, 308. 314, 379; first use of term, 226.