2. WHAT DID THE NORMANS DO WITH ROMAN TILE? Many Essex buildings, and some in East Anglia, have re-used Roman tile incorporated in their walls. For instance, Colchester Castle (c. 1086) used some of the ruined Roman material freely available to Norman builders at that time. The Saxons had pointed the way when the "Chapel on the Wall" at Bradwell was constructed about 630 A.D. from the ruined Roman Fort of Othona. The Saxons seem not to have cared to live in Roman ruins, perhaps from fear of ghosts, a very real fear in superstitious and devout early Christians, or perhaps because the great Roman structures (even in ruins) may have represented to them an alian, and therefore disliked, culture. There is some evidence, at present only tentative, that the Saxons could make tiles so like the Roman material that, for instance at Brixworth in Notting- hamshire, only elaborate thermoluminescence tests have recently been able to distinguish between them. But as a generality it is true to say that the Saxons did not go in for brick- making and it is not long ago that this would also have been said of the Normans. Now we know that, towards the end of the twelth century, Little Coggeshall Abbey was built of tiles undoubtedly made locally. I say "tiles" and not "bricks" because it is important to distinguish between them, if the differences in their manufacturing processes are to be taken into account. My criterion is: if the sum of the two larger dimensions (length + breadth) be divided by the smallest dimension (thickness) then if the quotient exceed 8 the object is a TILE,