Chapter XII.
First Deductions from Facts of the Certosa—Double Shocks.
I now pass to the deductions to be obtained from the observed facts here.
There is evidence everywhere, of a double if not a triple shock, confirmatory of the statements made at the town of Padula, of oscillation in various directions. The main shock was in the primary wave-path, right along the Vallone 15° W. of north towards the south, and arrived, through the deep clays and loose material of the plain. This was preceded at a very brief interval by a secondary shock, transverse in path to this by a certain angle, and derived from the lateral vibration of the mass of limestone mountain on the range to the north-east. Lastly, the primary shock appears to have been reflected, from the abrupt neighbouring mountain further south, and to have returned again, as an earthquake echo, through the clays, with very diminished force, arriving last upon the scene.
Referring to the Photog. No. 225, of the monument of St. Bruno, it will be seen that many of the obelisks and finials are twisted, and some are overthrown. We have universal evidence of the shock, in the path 15° W. of north to south. Here the finials which are overthrown are thrown
