Contact stimulus, Hill on, 98, 99
Controversies, Gilbert and Liebig, 238
---- Hill's, 89-91
---- Morison and Ray, 21, 31
---- Rothamsted and German physiologists, 242
---- Williamson and Brongniart, 254
Copley medal, Hales and, 70
Coprolite, discovery of, 155-156
Corn laws, Lindley and repeal of, 169
Cotyledons, Malpighi on, 35, 36
---- systematic value of, 36
Croonian lecture, Timiriazeff's, 80
Cryptogamic botany, Berkeley and, 4, 226
---- ---- W. Hooker and, 128
Cryptogamist, Ward as Government, 262
Cryptogams, R. Brown on, 121, 122
---- Cesalpino and, 21
---- Griffith and, 188-191
---- Harvey and, 4, 205
---- Williamson and fossil, 254, 255
Cycads, R. Brown on, 114, 117, 187
---- relationships of, 254
---- Zamia and, 253
Cycas, R. Brown on, 118, 119
---- Griffith on ovule of, 187, 188
Cytase, importance of, 267
Darwin, Charles, omission of, 5
---- ---- Harvey and, 221
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