the beds of this substance, which are visible along various points of this shore as far as Sligachan, are equally continuations of the shell limestone, more particularly as the marble limestone is also found at Sligachan in that position in which it might be expected with respect to the former. But I can give no clue to the history of the limestone which is entangled among the trap to the north of Broadford, having neglected to make such an examination of it as would have been required for this purpose. I must trust to some future geologist for the completion of what I have left unfinished. The most remarkable of these unascertained beds is found to the north of Portree, far inland, and extending towards the Storr on the eastern declivity of that range of hills, being interposed among enormous beds of trap. Others may be seen in various positions accompanying the secondary strata which lie under the trap on the shores of Trotternish; but as I can not pretend to give such a geological description of them as would satisfy myself, I must be contented with this cursory indication of their localities. I have little doubt that with the clue which I have now furnished, the task of assigning their geological relations will be found easy.
I find some difficulty in continuing the pursuit of the stratified rocks upwards from Loch Eishort, because a great geographical chasm now takes place between those already described, and the next most extensive mass which forms the promontory of Strathaird, and because they are connected but by a small indication of their order of succession. In the general description I have noticed that the rocks of Strathaird consisted chiefly of sandstone, alternating with thin and rare beds of limestone: these I conceive to be the next in order of superposition, and the proof tests on this. At the point which separates Loch Slapin from Loch Eishort a series of sandstone beds is found following the limestone lately
