"On the face or dial, which is about 7 feet in diameter, are two circles: one marked from one to thirty for the moon's age; the other figured from one to twelve twice over for the hours. In the centre is fixed a semi-globe representing the earth, round which a smaller ball, the moon, painted half white and half black, revolves monthly, and by turning on its axis shows the varying phases of the luminary which it represents. Between the two circles is a third ball, representing the sun, with a _fleur-de-lis_, which points to the hours as it daily revolves round the earth." The maker of the clock was a believer in the old-fashioned astronomy which recognised the earth, and not the sun, as the centre of the solar system. Below the clock is a door leading to the tower, which contains the great bell called "Peter," which is only exceeded in weight by the Great Tom of Oxford. It was brought from Llandaff by Bishop Courtenay at the end of the fifteenth century, and weighs 12,500 tons. It was cracked on 5th November 1611, "from a too violent ringing in commemoration of the Gunpowder Plot." We now enter the south transept, which is similar to the north. The monuments here are interesting. There is the supposed tomb of Bishop John the Chaunter (1185-1191), but is of later date; a sixteenth century monument of Leofric, the first Bishop of Exeter; a mural tablet to the memory of Sir Peter Carew, who played an important part in the rebellion of the Devon men, caused by the changes introduced into the Prayer-Book at the Reformation, when they besieged Exeter and well-nigh gained an entrance. Sir John Gilbert has a monument, a relative of Sir Walter Raleigh, one of the brave discoverers of the Elizabethan age and founders of our maritime supremacy. The colours of the Cornwall Light Infantry hang here, which were carried at Waterloo and in the Indian Mutiny. The Chantry of the Holy Ghost in the south-west corner of this transept is a Norman structure. It has a font which was first used at the baptism of Henrietta, daughter of Charles I., who was born in Exeter in 1644. The Chapel of St. John the Baptist, on the east side, is similar to that of St. Paul in the north transept. Bishop Oldham, whose chantry is in the south choir aisle, erected the screen of this chapel. Beyond the Chapel of the Holy Ghost is the chapter-house. The cloisters were destroyed by the Puritans. The chapter-house has been recently restored. Notice the Early English character of the arcade (thirteenth century) in the lower part; the upper part has Perpendicular niches. The Chapter Library has about 8000 volumes.