230 FOEESTS, WOODS, AND TEEES 



700 feet elevation, the whole of which is leased to the 

 Town Council. It comprises 400 acres of arable land, 

 with six farm-steadings, 300 acres of hill pasture and moor, 

 and 100 acres of plantations. The water is passed through 

 three separate layers of coke in the leats, and then in the 

 Boscathnoe reservoirs it passes through a final filter into the 

 service mains. Another part of the supply comes from an 

 underground watershed of 1000 acres ; and during the 

 summer the supply is augmented by pumping from a deep 

 well and adits. See Trans. Inst. Water Engineers, ix. 

 (1904). 



VIII. Wales 



Thirty-four local authorities and five private companies 

 obtain their water supply from gathering grounds aggregat- 

 ing 147,909 acres, of which 42,273 acres are owned by 

 eighteen Corporations. The most important areas owned by 

 local authorities are those of Liverpool, Birmingham, Birken- 

 head, and Cardiff. Excellent schemes of aftbrestation are 

 being carried out on the Vyrnwy area by the Liverpool 

 Corporation, and on the Elan area by the Birmingham 

 Corporation, Cardiff has only planted a few acres. A 

 considerable amount of purchasable planting land exists on 

 the Merthyr Tydfil area, but as this is not owned by the 

 Corporation it is doubtful if any afforestation scheme will be 

 considered. Large areas owned by Llandudno and Colwyn 

 are too elevated to carry trees. In most of the gathering 

 grounds in Wales, plantations on a small scale around 

 reservoirs are possible. 



The new gathering ground of Abertillery (see p. 221) — 

 2150 acres in Brecknockshire — is included in the total of 

 147,909 acres for Wales. The Newport (Mon.) proposed, 

 but not yet sanctioned, area of 5510 acres in Brecknock- 

 shire is not included in this total. 



Holyhead Waterworks Company obtain their supply 

 in part from Llyn Traffwll, a lake 6 miles distant, 

 with a gathering ground of 952 acres, situated between 



