Insula, R. A house, or block of houses, having a free space all round them. [Under the emperors the word domus meant any house, detached or otherwise, where a family lived; and insula meant a hired lodging.]
Intaglio, It. A stone in which the engraved subject is sunk beneath the surface, and thus distinguished from a cameo, which is engraved in relief.
Intaglio-relievato (It.), or cavo-relievo. Sunk-relief, in which the work is recessed within an outline, but still raised in flat relief, not projecting above the surface of the slab; as seen in the ancient Egyptian carvings.
Intense Blue. A preparation of indigo, very durable and transparent.
Intense Madder Purple. (See Madder.)
Intercolumniation, Arch. The space between two columns. This space varies according to the orders of architecture and the taste of the architect. According as the space is greater or less between the columns of a temple, the latter is called aerostyle, eustyle, systyle, and pycnostyle. Generally speaking, in the monuments of antiquity, whatever be the intercolumniation adopted, the space comprised between the two columns which face the door of the building is wider than the intercolumniation at the sides.
Intermetium, R. The long barrier running down the arena of a circus between the two goals (metæ). (See Meta.)
Intermodillions, Arch. The space included between two modillions (projecting brackets in the Corinthian order). This space is regular, and often decorated with various ornaments. In the Romano-Byzantine and Renaissance styles, modillions are often united by arcades.
Intertignium, R. The space between the tie-beams (tigna) in the wood-work of a roof.
Interula, R. (interior, inner). An undertunic; a kind of flannel chemise worn by both men and women.