In England, Nottingham drew its ancient British name of Tigguocobauc (House of Caves) from its troglodyte habitations; at Mansfield in that county such caves exist, and were associated with a class of inhabitants somewhat nomadic, who obtained their living by making besoms from the heather of the adjoining forest and moorland. They established a colony on the roadside waste, and sank wells in the rock for water. Nottingham enjoyed possibly the largest brewing and malting business in the country, and those trades were nearly wholly carried on in chambers and cellars and kilns cut out of the living rock. Mr. W. Stevenson, author of "Bygone Nottinghamshire," writes to me: "Last week I was with an antiquarian friend exploring an ancient passage in the castle rock, originally made as a sally-port to the castle, but at some later period when bricks came on the scene, converted or enlarged into a set of malt offices with malt kilns complete. Their original use and locality have been lost for a century, and their recovery is just being brought about. Their situation, high over the adjoining meadow, and their presence in the very heart of the rock that rises abrupt to the height of 133 feet is truly romantic. The foot of the range of cliffs, with a south aspect, was a favoured site. Here we find communities of monks dwelling for centuries, hermits spotted about, and a great part of the town-dwellers, tanners, dyers, and other trades where water was largely required. A peculiarity of these houses was their fresh-water supply. The denizens sank holes in their living apartments with steps cut in the rock until they got down to the water level, where they had little pools of fresh water. The system was known as _Scoop- wells_, and must have been very ancient. Those who lived on higher levels burrowed into the sides of sunken roads, and the track-lines of ancient military defences. In deeds of transfer of property it was customary to describe tenements as _below_ or _above_ ground. Old writers have said that they doubted if the erections above ground would fill the space excavated below ground; and to-day, when erecting new buildings, it is necessary to drill down into the rock a yard or more to ascertain that the foundations are not to be laid above the crowns of hidden vaults, chapels, or unknown habitations." Thoroton, in his history of Nottinghamshire, 1797, gives an illustration of rock-dwellings at Sneynton, adjoining Nottingham, but they have recently been cleared away for railway extension. The sanitary authorities have done their best to sweep the tenants out of the Nottingham cave habitations, but in Staffordshire at Kinver there are still troglodytes.