Kitap 7
24.9
The shock itself is not of one fixed type, but the original inquirers into such matters and their pupils have been able to discover the following forms of earthquake. The mildest form—that is, if such a calamity admits of mitigation—is when there coincides with the original shock, which levels the buildings with the ground, a shock in the opposite direction, counteracting the first and raising up the buildings already knocked over.
24.10
In this form of' earthquake pillars may be seen righting themselves which have been almost entirely uprooted, split walls coming together to their original position; beams, dislocated by the shock, go back to their places, and likewise channels, and such-like means of furthering the flow of water, have their cracks cemented better than they could be by human craftsmen. Now the second form of earthquake brings destruction to anything liable to it, and it throws over at once, as it were by a battering-ram, whatever meets the force of its impact.
