We were successful in procuring several good specimens of the Eigg pine, at a depth, in the conglomerate, of from eight to eighteen inches. Some of the upper pieces we found in contact with the decomposing trap out of which the hollow piazza above had been scooped; but the greater number, as my set of specimens abundantly testify, lay embedded in the original Oolitic grit in which they had been locked up, in, I doubt not, their present fossil state, ere their upheaval, through Plutonic agency, from their deep-sea bottom. The annual rings of the wood, which are quite as small as in a slow-growing Baltic pine, are distinctly visible in all the better pieces I this day transferred to my bag. In one fragment I reckon sixteen rings in half an inch, and fifteen in the same space in another. The trees to which they belonged seem to have grown on some exposed hill-side, where, in the course of half a century, little more than from two or three inches were added to their diameter. The _Pinites Eiggensis_, or Eigg pine, was first introduced to the notice of the scientific world by the late Mr. Witham, in whose interesting work on "The Internal Structure of Fossil Vegetables" the reader may find it figured and described. The specimen in which he studied its peculiarities "was found," he says, "at the base of the magnificent mural escarpment named the Scuir of Eigg,--not, however, _in situ_, but among fragments of rocks of the Oolitic series." The authors of the "Fossil Flora," where it is also figured, describe it as differing very considerably in structure from any of the coniferae of the Coal Measures. "Its medullary rays," says Messrs. Lindley and Hutton, "appear to be more numerous, and frequently are not continued through one zone of wood to another, but more generally terminate at the concentric circles. It abounds also in turpentine vessels, or lacunae, of various sizes, the sides of which are distinctly defined." Viewed through the microscope, in transparent slips, longitudinal and transverse, it presents, within the space of a few lines, objects fitted to fill the mind with wonder. We find the minutest cells, glands, fibres, of the original wood preserved uninjured. _There_ still are those medullary rays entire that communicated between the pith and the outside,--_there_ still the ring of thickened cells that indicated the yearly check which the growth received when winter came on,--_there_ the polygonal reticulations of the cross section, without a single broken mesh,--_there_, too, the elongated cells in the longitudinal one, each filled with minute glands that take the form of double circles,--_there_ also, of larger size and less regular form, the lacunae in which the turpentine lay: every nicely organized speck, invisible to the naked eye, we find in as perfect a state of keeping in the incalculably ancient pile-work on which the gigantic Scuir is founded, as in the living pines that flourish green on our hill-sides.