In the following accounts of the Cathedral Cities of England, technical architectural terms will necessarily appear, and to the end that they should be comprehensive, I give here a slight sketch of the origin of the various forms, and the reasons for their naming, together with dates; and to the end that I may supply a glossary of easy reference, I place as side headings in this introduction the various expressions which will be met with throughout the book. This, I hope, may relieve the reader of the tedium of having to turn to books of reference at each moment, and being subjected to a constant reiteration of the terms, which must necessarily be frequently employed. The Cathedrals of England may be said to comprise illustrations of Anglo-Saxon, Gothic, and Norman, with their variations and combinations. _Constantine_, A.D. 306-337.--_Romanesque._--With the establishment of Christianity, more especially when recognised in Rome during the time of Constantine, arose the marvellous development of architecture, founded upon the basis of classical remains. This "Romanesque," as this period of architecture came to be called, permeated later the whole of Western Europe. _Basilica._--Relieved from immediate fear of persecution, the Christian architects straightway commenced to convert the "basilica" remains to suit the requirements of the "New Faith." The Basilica, as its derivation from the Greek Βασιλικἡ ("the royal house") implies, "was the King's Bench" of the Romans. It was a long rectangular building, with sometimes rows of columns introduced to divide the space into a nave and aisles. One end terminated in an "apse," of semi-circular formation, where the judge and his assessors were accustomed to sit. This apse the Christians utilised as a chancel. The approach to the building was the "atrium," or forecourt, somewhat similar to the English Cathedral cloister, but differently situated. A chief characteristic of the Roman buildings was the "round arch," mainly composed of brick or stone work. This the Romans for many years had used more in a decorative way than for utility, but which became of more structural significance in the hands of the Christians. _Romanesque._--_Sixth to Twelfth Century._--In this wise, from the remains of the Basilica, with the further development of the "round arch" to the "semi-circular arch," the Christian Romans gradually evolved the style of architecture called "Romanesque," _i.e._, in the Roman Style. This style became prevalent throughout Western Europe from the beginning of the sixth to the close of the twelfth century. In process of time transepts were added and the choir prolonged, giving the outline, as it were, of a cross, the Holy Symbol of Christianity. _Anglo-Saxon._--500-1066.--Thus Romanesque may be said to be the fountain-head of Anglo-Saxon, Norman Proper, Anglo-Norman, and Gothic Architecture.