A book of folk-lore by Sabine Baring-Gould In the early days of exploration of prehistoric relics little care was bestowed on discriminating the several layers of deposit through which the spade cut, and what was found was thrown up into a common heap 347.41 Kb. 13
Railway Signals On the road network, drivers are expected to drive such as to be able to stop within the distance they can see to be clear. They are aided by traffic lights at junctions and by various warning signs 72.31 Kb. 1