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But while unconformability invariably bears testimony to a lapse of unrepresented time, the conformability of two sets of strata in contact by no means implies that the newer formation immediately succeeded the older one. It simply implies that the ancient rocks were subjected to no movements of such a nature as to tilt, bend, or break them before the more modern formation was superimposed.
One day they stopped to investigate what they had supposed to be an optical illusion. They observed that leaves and other light substances floated several inches above the surface of the water in the pools. On coming to the edge and making tests, they found a light liquid, as invisible as air, superimposed upon the water, with sufficient buoyancy to sustain dry wood and also some forms of life.
But the novelty of the performance, superimposed upon the concussion and the exertion involved, was too much for his stability, and with one prolonged but unsuccessful effort to hold on to his dignity Jan rolled over on the side farthest from the door-jamb.
Among the advantages which so have come, in a sense unearned, to the French people, is their uninterrupted retention, out of Roman and perhaps pre-Roman times, of the conception of a commonwealth, a community of men with joint and mutual interests apart from any superimposed dependence on a joint feudal superior.
It is an accepted fact that pearls are excretions of superimposed concentric laminæ of a peculiarly fine and dense substance, consisting in major part of carbonate of lime. Linnæus, believing in the possibility of producing pearls by artifice, suggested the collecting of mussels, piercing holes in their shells to produce a wound, and bedding them for five or six years to give pearls time to grow.
These dainty productions, with their delicately painted faces and hands, are far more often found than those with embroidered flesh. In some of these, faces painted with real miniature skill upon bits of parchment have been inserted or superimposed upon the satin, the edges, as I have said, carefully covered by embroidery, done with single hair threaded into the needle instead of silk.
This gives a half-slab bond to each course, as on one face of the quoin in one course will appear a quarter slab and in the course above a three-quarter slab superimposed upon it, or vice versa. Thus are the walls in Figs. 19 and 20 built up.
The pavement, as it peeped out here and there through a moraine of superimposed mud and offal, was seen to consist of small oblong stones, like petrified kidney potatoes. The houses, some leaning this way, some that, with projecting upper stories and overhanging gable-roofs, nodded together overhead, leaving but a narrow strip of sky down which the sunlight strove in vain to struggle.
Inside, the house, empty of furnishing, was a place of echoes muffled in dust; the insidious, dank odours of corrupting wood and plaster; walls with melancholy, superimposed, stripping papers; older, sombrely blistered paint and panelled wainscoting varnished in an imitation, yellow graining. It was without a relic of past dignity.
The sectional diagrams have then been superimposed, in such a manner, that the basal axes of the skulls coincide by their anterior ends, and in their direction.
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