Page:Great Neapolitan Earthquake of 1857.djvu/316

260 This result may be in error a degree or two, for the latitude and longitude are had from map measurement, and the cloudy mist that hangs at this season all the forenoon, over the chill waters of the rivers in these mountain valleys, precludes good observation. The declination here is not, therefore, far from the same as at Naples.

Auletta has suffered much from the shock, most so, at its highest portions, and upon the N. E. side of the summit, wher the most substantial buildings stood, and upon the S. W., where were some of the poorest and worst.

The general appearance of the locality is seen in Photog. No. 134 (Coll. Roy. Soc.) from the road sloping up to the town, and Photogs. Nos. 135 and 136 give two views nearly at right angles to each other, of some of the most instructive buildings at the upper part of the town (No. 135), looking, about N. W.

The propped wall, in both Photogs. is the same, and is square to the four parallel walls, which in No. 136 are observed all shorn off and thrown, from the western quoins. This is a good example of the parallelism of angle at which such fractures form in large masses.

At the lower part of the town, and upon the slope towards the N. W. leading to it, the fractures all indicate a very steep emergence from the eastward—upwards of 45°; but upon the summit, the buildings show a lower apparent angle of emergence, and greater dislocation. This obviously arises from the fact that, as the wave-path hereabouts was in some direction from E. to W., and therefore diagonally transverse, to the narrow or thin direction of the spur, upon which the town stands; the mass of the spur itself vibrated