noted: excavations in 1906-07, however, left the size and extent of these remains somewhat uncertain and resulted in what we now know to be an incorrect plan. The work done last spring (1913) makes it plain (see illustration) that the Principia fronted — in normal fashion — the main street of the fort (gravel laid on cobbles) running from the north to the south gate. But, abnormally, the frontage was formed by a verandah or colonnade: the only parallel which I can quote is from Caersws, where excavations in 1909 revealed a similar verandah in front of the Principia. Next to the verandah stood the usual Outer Court with a colonnade round it and two wells in it (one is the usual provision): the colonnade seemed to have been twice rebuilt. Beyond that are fainter traces of the Inner Court which, however, lies mostly underneath a churchyard: the only fairly clear feature is a room (A on plan) which seems to have stood on the right side of the Inner Court, as at Chesters and Ambleside. Behind this, probably, stood the usual five office rooms. If we carry the Principia about twenty feet further back, which would be a full allowance for these rooms with their walling, the end of the whole structure will line with the ends of the granaries found some years ago. This, or something very like it, is what we should naturally expect. We then obtain a structure measuring 81 × , the latter dimension including a verandah wide. This again seems a reasonable result. Ribchester was a large fort, about , garrisoned by cavalry; in a similar fort at Chesters, on Hadrian's Wall, the Principia measured 85 × : in the 'North Camp' at Camelon, another fort of much the same size (nearly 6 acres), they measured 92 × ." The most famous artifact discovered in Ribchester, and dating from the Roman period, is the elaborate cavalry helmet. The helmet was discovered, part of the Ribchester Hoard, in the summer of 1796 by the son of Joseph Walton, a clogmaker. The boy found the items buried in a hollow, about 10 feet below the surface, on some waste land by the side of a road leading to Ribchester Church, and near a river bed. In addition to the helmet, the hoard included a number of patera, pieces of a vase, a bust of Minerva, fragments