A TOUR ROUND NORTH WALES. 19 



was the origin of that affemblage of houfes 

 on the adjacent more, called Park-Gate, 

 ftill the ftation of the Irim packets. But 

 now the water is of depth fufficient to al- 

 low veflels of 350 tons burthen to come 

 up to the quays at fpring tides. This new 

 canal opens from the fea near Northop, 

 about ten miles above Chefter, and there 

 are two ferries acrofs it, which make a 

 communication with the oppofite county 

 of Wales. The river juft above the bridge 

 is crofTed by a ftone caufeway, which 

 caufes a fall of thirteen feet, and cuts ofF 

 conftant communication by veflels between 

 the upper part of the river and the lower. 

 There are however fix or eight tides that 

 flow over the caufeway, and fome reach 

 upwards of twenty miles up the country, 

 which allows a navigation for fmall barges 

 as far as Bangor, in Flintmire. The caufe- 

 way ferves as a dam for the purpofe of 

 turning mills. The fnufF mills are fituated 

 C 2 directly 



