From Royston onwards, as has been seen, the road is marked in a map of 1695. It is mentioned, says Beldam (_Archæological Journal_, XXV), in documents of the twelfth and thirteenth centuries among the monuments of Royston Priory, as “Hickneld” and “Ykenilde.” There are hut-circles on the heath to the west, associated with neolithic implements. At Royston, as at Baldock and Tring, gold coins of Cunobelin have been found; and here the road crosses Ermine Street. West of Royston the road is again a county boundary, and goes for miles between many tumuli. “A small Roman habitation” was opened at Slip End near Odsey by Lord Braybrooke. At “Slip Inn” it bounds parishes instead of counties. There is a manor-house and moat at Bygrave, and a tumulus on Metley Hill opposite. Here it passes between two unenclosed parishes, Bygrave and Clothall. It goes along the edge of Baldock, where they have found neolithic and Bronze Age implements and coins of Cunobelin and of “Icenian type,” and Roman urns: here is the crossing of Stane Street from Godmanchester to Colchester. For five miles beyond Baldock the road is a parish boundary. It touches a camp at Wilbury Hill, and near it they have found “a great variety of coins of the Roman emperors” and a small copper blade, coins of Constantine, bones and ashes. Ickleford, where it ceases to be a boundary, has produced palæolithic evidences, and the neighbourhood of Hitchin, a mile south, palæolithic and neolithic and late Celtic. Two miles farther on it is a parish boundary for a mile and a half, and then the Hertford and Bedford boundary to the top of Telegraph Hill. Ravenspurgh Castle is a mile north of it on the Barton Hills. It turns along Dray’s Ditches and enters the road from Barton to Luton. Here the parish boundary goes straight across, following a lane, to Great Bramingham Farm and, with a break, to Chalton, from which the road might have gone through to Houghton Regis and “the British town of Maiden Bower,” and to the north of Dunstable. But the line of the road is continued from Dray’s Ditches across the Luton road to Limbury, and over the Lea at Leagrave Marsh, passing, near the moats and the remains of a nunnery at Limbury, the fortification of Waulud’s Bank, and the scene of many finds of coins and neolithic implements. This line is clear on Morden’s seventeenth-century map. A new street called “Icknield Way” and a footpath lead with recent interruptions into the Luton and Dunstable road, which is for some time a parish boundary. Here it begins to follow under the Downs, which have traces of Celtic huts. [Illustration: Icknield Way, crossing Watling Street, Dunstable.]