A HISTORY OF MIDDLESEX 



expending much from the treasury his labours proved fruitless. 6 It 

 would be interesting to know the cause of this failure ; possibly 

 Longchamp could not complete the circuit on the river side, where it was 

 exposed to the force of the tide, a difficulty overcome by the engineers of 

 Henry III, who constructed the embankment and wharf, and protected 

 it by piles ; a work completed by his son Edward I. 



When the Duke of Wellington was constable of the Tower he 

 cleansed and deepened the moat ; but its stagnant waters became so 

 offensive that it was finally drained in 1843. The f sse is an irregular 

 hexagon in plan, but it has been greatly altered from its original 

 appearance in the sides and base to provide a drilling-ground for the 

 garrison. 



A vallum, of unknown dimensions, apparently a revetment, formerly 

 occupied a position on the west side of the moat, for we are told that in 

 1316 the citizens pulled down a mud wall between the Tower Ditch 

 and the city, which was supposed to have been constructed by Henry III ; 

 they were, however, compelled to restore the same, and were fined 1,000 



marks for their 

 lawlessness. 



TOTT E N- 

 HAM (xii, 7). 

 A rectangu- 

 lar moat, sur- 

 rounding an 

 area now bro- 

 ken into two 

 portions, is situated on 

 ' Down Hills,' immediately 

 south of the River Moselle. 

 On the exterior of the wes- 

 tern and eastern sides are 

 broad banks 2 ft. in height. 



MISCELLANEOUS 

 EARTHWORKS 



[CLASS X] 



BRENTFORD (xxi, i). 

 A possible line of defence 

 to the Brent Ford is traced 

 by Mr. Montague Sharpe, 

 of which no definite signs 

 exist ; even the ' Old 



Han 



f~inn e. r 



PLAN OP GRIMES DYKE THROUGH HARROW WKALD 

 AND PINNER 



* Roger of Wendover, A.D. 1 190 

 12 



