CHAPTER VI.
APPLICATION TO THE ACTUAL FORM OF THE ISOSEISMALS.
We are now enabled to combine the views stated in the three last chapters, and apply them in explanation of the forms of the isoseismals, the centre of effort not occupying the centre of their figure, &c., and to other facts of the earthquake. Upon the Map B the physical features of the shaken country are, to some extent, marked in. The greatest and most nearly continuous chains of the Apennines are shown; some of the subordinate elevations, and the river courses, which indicate generally the lines of elevation and depression of the surface.
Upon the (original) Map A, the axial lines alone of the great and more continuous ridges are marked in.[1] Referring to both these maps, it will be seen, that the three coseismals are crossed diagonally, by the neariy continuous ridges of the great Apennines; the one running west to east, from about Baronissi to Spinazzola, the other north to south, from the direction of Melfi down to that of Lauria.
- ↑ It would have been best this were so likewise in the Map as here reproduced. The reader will find it advantageous, if engaged in research, to consult the original Maps A, B, C, and D, in the Collection of the Royal Society, and to compare the surface as delineated on Zannoni's great map.
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