7 22.966 80 262.472 900 2952.809 8 26.247 90 295.281 1000 3280.899 9 29.528 100 328.090 10 32.809 200 656.180 X _A Brief Glossary of architectural terms, with popular definitions, as applied to the components which compose the principal features of a cathedral church_ [Illustration: NO. 1. GROUND PLAN] A Lady-chapel The principal chapel, usually behind the high altar, at the extremity or eastern end of choir, dedicated to Our Lady (Notre Dame) B Transept The middle portion of a church, which projects at right angles with the main body of nave and choir C Porch Usually the vestibule or receding doorway D Lantern or crossing Where the transept crosses and joins choir and nave, usually with windows, if a lantern proper E Choir That portion of the edifice in which are stalls for the choristers, and chapter, also containing the _Maitre d'Autel_ F Ambulatory The aisles or colonnade which surround the choir G Chapels Literally a small place of worship containing an altar. In a great church, which may contain several, they are usually dedicated to male and female saints H Nave The main body of a church, extending from the choir to the principal facade; _i. e._ that part between the outer aisles I Aisles The lateral passage on either side of the nave and separated therefrom by piers or pillars J Portal Literally, the framework of a doorway K Abside The domed easterly end of a church L Sacristy The apartment in which is kept the church plate and vestments [Illustration: NO. 2. CROSS SECTION] A Nave aisle vaulting The arched roof of stone B Nave vaulting The arched roof of stone C Flying buttress A supporting outside prop of the thrust variety. Notably a distinguishing feature of mediaeval Gothic architecture D Side aisle The passage which flanks the nave E Buttress pier The outer support of a flying buttress F Pinnacle On towers, buttress piers, gables, etc. G Gargoyle A projecting water-spout carved grotesquely H Niche A recess in a wall, or surmounting a pier; primarily to hold a statue [Illustration: NO. 3. INTERIOR]