A plan of this labyrinth is shown in Fig. 85. Theobalds was afterwards transferred by Burleigh's son, the Earl of Salisbury, to King James the First, in exchange for another noble seat in the same county, Hatfield House, still held by the present Marquis of Salisbury. [Illustration: FIG. 85.--Maze at Theobalds, Herts. (After Trollope.)] In the grounds to the rear of the latter mansion is to be seen at the present day one of the finest examples of a hedge maze, which, although of fairly modern construction, probably replaced an earlier specimen. Our photograph, Fig. 86 (see Frontispiece), was taken, by kind permission, from the roof of Hatfield House. The hedge is of tall, thick yew throughout, and is perfectly formed, without any of those thin, straggly growths in the lower portion which, by tempting the unscrupulous maze-trotter to burst through them, soon necessitate renewal or unsightly patching. The maze is 174 ft. in length and 108 ft. in width, and has two entrances (or exits), one at each end. The basin which formerly occupied the centre was replaced some years ago by a block of yew surmounted by topiary figures. Fig. 87 shows the maze in plan. [Illustration: FIG. 87.--Maze at Hatfield House, Herts. Plan. (W. H. M.)] From the beautifully turfed level above the maze, or from the parterre terrace above that, one can overlook the hedges and enjoy, if so inclined, occasional glimpses of ensnared and perplexed visitors. The type of hedge maze exemplified here, in which the paths are bounded by hedges of uniform thickness, is only one development. Another type arose in the late seventeenth century in which serpentinous footpaths penetrated blocks of shrubs or dense thickets. In some cases limes or hornbeams were "plashed," _i.e._, their branches were so trained and intertwined as to form a continuous wall of verdure. In other cases the intervals between the paths were filled with loose aggregations of flowering shrubs and evergreens; such an arrangement as this was usually termed a "wilderness." (The term "plashing," by the way, should not be confused with "pleaching," which merely signified the process of ordinary trimming).