Ipomœa purpurea, ii. [128].
Ireland, remains of Bos frontosus and longifrons found in, i. 81.
Iris, hereditary absence of the, ii. [9];
hereditary peculiarities of colour of the, ii. [9]-[10].
Irish, ancient, selection practised by the, ii. [203].
Iron period, in Europe, dog of, i. 18.
Islands, oceanic, scarcity of useful plants on, i. 311.
Islay, pigeons of, i. 183.
Isolation, effect of, in favour of selection, ii. [233]-[234].
Italy, vine growing in, during the bronze period, i. 332.