with the lemon, i. 399, ii. [365];
naturalisation of, in Italy, ii. [308];
variation of, in North Italy, ii. [256];
peculiar variety of, ii. [331];
Bizzaria, i. 391;
trifacial, ibid.
Orchids, reproduction of, i. 402, 403; ii. [133]-[135].
Orford, Lord, crossing greyhounds with the bulldog, i. 41.
Organisms, origin of, i. 13.
Organisation, advancement in, i. 8.