The evidence of Padre Paligonice is conclusive, however, as to the direction of wave-path, being very nearly from east to west, complicated directly afterwards, by reflected and refracted waves, from other directions, even so far divergent as north and south.
An ancient cylindrical tower, near the west side of the town, of the Hospital of St. Carlo, part of an old Capuchin monastery, has been split by three large fissures, running nearly to its base. It is about 20 feet diameter internally, the walls 8 feet thick, and has no floor nor roof; and is about 45 feet in height.
Two of those fissures which slope off a few degrees towards the N.E. at their lower ends, are in the same diameter. and in direction 42° W. of north. The other one is exactly at right angles to the preceding, and hence in direction 132° W. of north. (See Fig. 311.)
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Fig. 311
The N.W. fissure was the widest, 2¼ inches at top (nearly): the S.E. one, about 1 inch wide at top, and the S.W. one about 1½ inch.
