. Manual of the geology of Ireland. U Fig. 18.—Section of Cash, Duncans Flow, County Antrim. during and subsequent to the deal-forest age. The roadprobably was used as long as the deal forest existed, andduring its occupation, holes in the oak sheeting weremended with deal slabs placed across them (see Fig. 19).. Fig. 19.—Plan of part of Cash, Duncans Flow, County Antrim. After the four feet of lower peat had accumulated, whichrepresents at least 16 feet of uncompressed peat, the climatemust have changed for the place to dry, thus stopping thegrowth of the peat, and forming a surface, on which
. Manual of the geology of Ireland. U Fig. 18.—Section of Cash, Duncans Flow, County Antrim. during and subsequent to the deal-forest age. The roadprobably was used as long as the deal forest existed, andduring its occupation, holes in the oak sheeting weremended with deal slabs placed across them (see Fig. 19).. Fig. 19.—Plan of part of Cash, Duncans Flow, County Antrim. After the four feet of lower peat had accumulated, whichrepresents at least 16 feet of uncompressed peat, the climatemust have changed for the place to dry, thus stopping thegrowth of the peat, and forming a surface, on which the deal-<trees grew; or it may have been drained artificially. Probablyboth contributed, as it appears likely, when the road wasformed, some drainage also was accomplished, to keep sur-plus water away. The road seems to have been abandoned T 2 276 Geology of Ireland. and the deal forest destroyed at about the same time,which appears due to flooding, as the peat above both is Flow bog (Ulster), that is, peat full of sedge andflaggers, which only grow and accumulate in marshes orflooded bogs. On the roadway there are now 5 feet ofuncut turf, while 10 feet of good turf are said to havebeen cut away. Over the good turf there must have beenwhite turf and clearing, which would add at leastabout 5 feet mo
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