42 A TOUR ROUND NORTH WALES. 



from thence a charming, and as far as it re- 

 lates to Park-Gate, certainly an expediti- 

 ous mode of travelling. 



The caftle ftands upon a rock in the 

 marfh, and fonear the river that fometimes, 

 at high water, the walls are warned by the 

 tide.-j- It had a communication with the 

 town by a bridge, which led to the outwork, 

 called the Barbican, within which, in 1785, 

 the county goal was creeled. This build- 

 ing has been fquare, having a tower at each 

 corner, fome remains of every one of which 

 are yet left. The tower at the fouth-eaft 

 corner is much larger than the others, and 

 is called the double tower. It's outward 

 diameter meafures forty feet ; it is formed 

 by two concentric walls, each fix feet thick, 

 having a gallery, eight feet broad, included 



t The channel of the Dee is at prefent at fome dif- 

 tance, but it formerly flowed clofe under the walls. 

 There are flill in fome parts rings to which mips 

 were moored. Pennant, I. 45. 



between 



