In the neighbourhood of Bexley Heath, and also at Crayford and places beside the Thames near Dartford are some singular shafts of unknown age or purpose, sunk into the soil, frequently to a depth of a hundred feet, through the chalk of which this district chiefly consists. "Danes' Holes," the country-folk call them, and they are traditionally supposed to have been constructed as hiding-places to which the old inhabitants of these parts could retire when the Northmen's piratical fleets appeared in the estuary of the Thames. Antiquaries have a theory that these singular pits were sunk by our neolithic forbears in search of flints. The antiquaries, however, are most probably wrong, because flints were to be found readily enough by the men of the Stone Age, without going to the trouble of mining for them; and no one has yet arisen to show that neolithic man was more likely than we, his descendants, to give himself unnecessary labour. We will, therefore, assume that the legendary name of "Danes' Holes" shadows forth the purpose of these shafts a great deal more correctly than the ingenious theories of antiquaries, made to fit personal predilections; the more especially as legendary history is generally found to square with facts much more frequently than scientific pundits would have us believe. These remarkable pits commence with a trumpet-shaped orifice which immediately contracts into a narrow shaft, broadening at the bottom into a bulb-like chamber, not unremotely resembling in shape the tube and bulb of a thermometer. "By a curious coincidence," says one who has long been familiar with these strange survivals, "the shape of the Bexley shafts is exactly that of a local beer-measure which is held in great estimation." In several houses may be seen an advertisement that "beer is sold by the yard." XII [Sidenote: CRAYFORD] Leaving Bexley Heath, the road becomes suddenly beautiful, where it loses the last of the mean shops--the cats'-meat vendors, the tinkers, the marine stores--that give so distinct and unwholesome a _cachet_ to its long-drawn-out street. The highway goes down a hill overhung with tall trees, with chestnuts and hawthorns, whose blossoms fill the air in spring with sweet and heavy scents; but, in the hollow, gasworks contend with them, and generally, it is sad to say, come off easy victors. Follows then a nondescript bend of the road which brings one presently into Crayford, fifteen miles from London.