A Norman relic of the highest interest is the Exeter Domesday Book, also preserved in the Chapter Library, describing in greater detail than is given by the Winchester Survey, especially as regards live stock, the five counties of Devon, Cornwall, Dorset, Somerset, and Wiltshire. Among many points of difference between the two books is that where the more general survey gives the letters T.R.E., for _tempore regis Edwardi_, meaning that such were the facts in the time of Edward the Confessor, the Exeter Book uses the phrase "eadie q^a rex·E·f·u·&·m·" for _eâ die qua Rex Edwardus fuit vivus et mortuus_, that is to say, "on the day when King Edward was alive and dead," meaning the day he died, which was the 6th of January, 1066. It is worthy of note that, with one exception, the Devonshire Hundreds were the same in 1086, the supposed year of the completion of the Survey, as they are in our time. Scattered up and down over Devonshire are many old stone crosses, some in churchyards or by the wayside, probably intended as preaching places, and some standing on the open moor as marks of boundary or of lines of ancient roadway, a few of them bearing brief inscriptions or traces of decoration. Fine examples are those of Addiscot, Helliton, Mary Tavy, and South Zeal, the last-named of which has been restored, and measures, with its steps, eighteen feet in height; the Merchant's Cross near Meavy, the tallest on Dartmoor; the very ancient Coplestone Cross, once decorated with interlaced Celtic ornament, standing where three parishes meet, and named in an Anglo-Saxon charter of 974; and the Nun's or Siward's Cross, inscribed on one side (SI)WARD, and on the other BOC LOND, set up in the twelfth century to mark the boundary between the royal forest and the property of Buckland Abbey. With these may be mentioned the inscribed stones of Lustleigh, Stowford, Tiverton, and Fardel--the latter now removed. The last-named, and one of the three Tiverton examples, bear inscriptions in Ogham or Irish runic characters. [Illustration: Cyclopean Bridge, Dartmoor] Among the features of Dartmoor are the so-called "clapper bridges," made of great blocks of unhewn stone. Their date and their builders are matters of conjecture. If, as has been said, they were meant for pack-horse traffic, they may be at least as old as the time of the Norman Conquest, for packhorses are mentioned in the Exeter Domesday. There are fine examples at Dartmeet, Bellaford, and near Scaurhill Circle. But the most striking and perhaps the most ancient is that at Post Bridge, in which two of the stones are fifteen feet long.