Circassia, horses of, ii. [102].

Circumcision, ii. [23].

Cirripedes, metagenesis in, ii. [366].

Cistus, intercrossing and hybrids of, i. 336, 389, ii. [140].

Cistus tricuspis, bud-variation in, i. 377.

Citrons, i. 334-335.

"Citrus aurantium fructu variabili," i. 336.

Citrus decumana, i. 335.

Citrus lemonum, i. 336.

Citrus medica, i. 335-336.