be remarked, as also in Photog. No. 50, at Paterno church.
In the Photog. No. 51 (Coll. Roy. Soc.), also in a street in the town of Polla, a mass, thrown by an extremely oblique subabnormal wave, will be observed to the left hand, in which the effect of this obliquity, and of the miserable class of "nobbly" rubble masonry, and of a floor within, have perturbed the phenomena, as respects the wall, seen most nearly in the plane of the picture. The direction of shock, was in this instance, nearly along the line of the street, towards the spectator, and a little from the left, towards the right; and in further evidence of the general direction here, it should be remarked that the whole side of the street to the right hand where the fronts of the houses are nearly in the line of shock, and supported as well as held in by the floors, &c., against the small transverse component of shock, all remains standing, though propped here and there; while at the far end of the street, the fronts of the houses in the street running obliquely across that going from the spectator are all down.
