. Schlich's manual of forestry. >^. Fig. 10. Fig. 11. trained to opposite sides and interlaced. Such a hedge canbe made to keep out hares and rabbits. Living hedges are, in forestry, only used for nurseries oralong roads leading to pastures. 2. Walls. These may be dry stone walls, or they may be constructedwith mortar. The former are liable to fall, and the latterare very expensive. Walls generally interfere with the freecirculation of air; in some cases, this may be desirable forthe purpose of protecting tender plants against cold aircurrents. Turf dykes are walls constructed of turf and c
. Schlich's manual of forestry. >^. Fig. 10. Fig. 11. trained to opposite sides and interlaced. Such a hedge canbe made to keep out hares and rabbits. Living hedges are, in forestry, only used for nurseries oralong roads leading to pastures. 2. Walls. These may be dry stone walls, or they may be constructedwith mortar. The former are liable to fall, and the latterare very expensive. Walls generally interfere with the freecirculation of air; in some cases, this may be desirable forthe purpose of protecting tender plants against cold aircurrents. Turf dykes are walls constructed of turf and can replacestone walls, where turf is abundant and stones are rare ; atthe same time, they are of a perishable nature. In theaccompanying Fig. 12 (after Brown), the natural surface line s. K 130 PRELIMINARY WORKS. is represented by a, a, a, a, while b, b are the places wherethe turf has been excavated, and c, c, the dyke consisting ofsuccessive layers of turf. c /\\\\M /VYYWVV/\\\U\\\\ /\ \\AWV\-\ /\\\\A\\\,\~\ h . I
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectforestsandforestry
