"Any lateral division of any part of a church, whether nave, choir or transept. The number of aisles varies in the churches of different countries." — Chambers' Encyclopedia, 1875

Aisle

"Any lateral division of any part of a church, whether nave, choir or transept. The number of aisles…

"Lady Chapel of Gloucester Cathedral, England, looking toward the nave." -Whitney, 1911

Gloucester Cathedral

"Lady Chapel of Gloucester Cathedral, England, looking toward the nave." -Whitney, 1911

"Sectional compartment of the Nave of Lincoln Cathedral." — Encyclopedia Britanica, 1893

Lincoln Cathedral

"Sectional compartment of the Nave of Lincoln Cathedral." — Encyclopedia Britanica, 1893

"Sectional compartment of the Choir of Lincoln Cathedral." — Encyclopedia Britanica, 1893

Lincoln Cathedral

"Sectional compartment of the Choir of Lincoln Cathedral." — Encyclopedia Britanica, 1893

"Nave of Wells Cathedral." —D'Anvers, 1895

Nave

"Nave of Wells Cathedral." —D'Anvers, 1895

"The decoration of the interiors of the buildings of the Renaissance is also copied from ancient Roman architecture. The rooms are either vaulted or have flat ceilings, but in both cases are adorned with paintings after the manner of those discovered in the Baths of Titus, or by panel-work, that is, sunken coffers with a regularly distributed enrichment [shown here]. These panels are themselves often adorned with historical or allegorical paintings, or with arabesques. Ornamented panels were employed in large palaces for horizontal ceilings, as also in churches, though in the latter case they were more often applied to cupola vaulting, as notable in St. Peter's."

Interior View of St. Peter's at Rome

"The decoration of the interiors of the buildings of the Renaissance is also copied from ancient Roman…

The Nave of Bourges Cathedral in France showing the sexpartite vaulting, divided into six parts.

Sexpartite Vaulting

The Nave of Bourges Cathedral in France showing the sexpartite vaulting, divided into six parts.

"Plan of Wells Cathedral. A, Apse or apsis. B, Altar, altar-platform, and altar-steps. D E, Eastern or lesser transept. F G, Western or greater transept. H, Central towers. I J, Western towers. K, North porch. L, Library or register. M, Principal or western doorway. N N, Western side doors. O, Cloister yard or garth. P Q, North and south aisles of choir. R S, East and west aisles of transept. T U, North and south aisles of nave. R R, Chapels. V, Rood screen or organ loft. W, Altar of Lazy chapel." — Winston's Encyclopedia, 1919

Wells Cathedral

"Plan of Wells Cathedral. A, Apse or apsis. B, Altar, altar-platform, and altar-steps. D E, Eastern…

The plan of the Westminster Cathedral in London with elements indicated.

Westminster Cathedral

The plan of the Westminster Cathedral in London with elements indicated.