_Holm_ is akin to ealand. Taylor says: "The suffix in the name Durham is properly not the Saxon _ham_, but the Norse _holm_; and Dunelm--the signature of the Bishop--reminds us also that the Celtic prefix is _Dun_, a hill-fort, and not _Dur_, water. In the Saxon Chronicle the name is correctly written Dunholm." _Holm_ is also Anglo-Saxon, and is described by Bosworth as "a river island, a green plot of ground environed with water--hence holmes." Holmside, in the county of Durham, and Midge Holm, Holmwath, and Yallow Holm, are names of places by the river in Teesdale. By the Wear, at the west end of Rogerley Park, is situated Burry Holm. In the year 1583 Thomas Blacket, Esq., of Woodcroft, demised to Peter Maddison, gent., three closes of land being part of Woodcroft estate; one close was on the west side of the low pasture, and another close of meadow was called "Buiri Holme." It might be the holm of the burdock (_Arctium Lappa_), or the berry holm from Anglo-Saxon _berie_, _berige_, a berry, or the _bere_ holm or place where barley grew, Anglo-Saxon _bere_, barley. Again, the spear plume-thistle (_Cnicus lanceolatus_), called in Scotland the bur-thrissil, might flourish here, or the burtree, the common elder (_Sambucus nigra_). The names _flask_, _swang_, _bog_, and _wass_, indicate wet land, and are kindred terms to a certain extent. Those accustomed to travel on the highlands of Weardale will be familiar with lands denominated _boggy_, _swampy_, _swangy_, _marshy_. The term _wass_ may be considered obsolete, and that of _flask_ nearly so. In Hatfield’s Survey there were in Bolihope lands called the Wasses and Seggefeldland. _Wass_ is from the Anglo-Saxon _wæs_, water, and _segg_ from the Anglo-Saxon _segg_, _seeg_, a reed or sedge, which commonly grows on wet land. A pasture in Killhope, between Low Moss and the Rush, was some thirty years ago called the Flask. Langtay Flask is in Burnhope, and a lead-mine here was known by that name 200 years ago. In the bailiffs’ roll under Queryndon, we find in Hatfield, lands called _fennes_, _flasskes_, and a place called Atthillswang. In Quesshowe there was le _Flaske_. At Framwelgate, Broom cum le _Flassh_, at Cotam les _flaskes_. _Bog_, Gaelic _bog_, Irish _bogach_, marsh, morass, quagmire, needs little explanation. Riggy Bogs, Boghouse, White Bog, and Bog Hole, are amongst names of places in the dales. _Den_, from the Celto-Saxon, is a deep wooded valley, and has already been considered under valleys. The most important _denes_ are Easter Black Dene and Wester Black Dene. Hot Hill is no doubt the wooded hill, but Hotts has another derivation, and appears to be from _hut_, an abode or sheltered place. Another name, _hurst_, pure German, a thick wood, is confined, as far as Weardale is concerned, to Shield Hurst.