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fish which he professed to restore; that the same judgment applies equally to his restoration of _Coccosteus_; and that, instead of reproducing in his figures the true forms of ancient Cephalaspeans, he has merely given, instead, the likeness of things that never were "in the heaven above, or in the earth beneath, or in the waters under the earth." The place in the geologic scale, as certainly as the forms and characters, of these ancient fishes, had to be determined. Mr. George Anderson had informed me, as early as 1834, that some of them were identical with the ichthyolites of the Gamrie deposit; but then the place of the Gamrie deposit was still to fix. It had been recently referred to the same geological horizon as the Carboniferous Limestone, and was regarded as lying unconformable to the Old Red Sandstone of the district in which it occurs; but, wholly dissatisfied with the evidence adduced, I continued my search, and, though the process was a slow one, saw the position of the Cromarty beds gradually approximating towards determination. It was not, however, until the autumn of 1837 that I got them fairly fixed down to the Old Red Sandstone, and not until the winter of 1839 that I was able conclusively to demonstrate their place in the base of the system, little more than a hundred feet, and in one part not more than eighty feet, above the upper strata of the Great Conglomerate. I had often wished, during my explorations, to be able to extend my field of observation into the neighbouring counties, in order to determine whether I could not possess myself, at a distance, of the evidence which, for a time at least, I failed to find at home; but my daily engagements in the bank fixed me down to Cromarty and its neighbourhood; and I found myself somewhat in the circumstances of a tolerably lively beetle stuck on a pin, that, though able, with a little exertion, to spin round its centre, is yet wholly unable to quit it. I acquired, however, at the close of 1837, in the late Dr. John Malcolmson of Madras, a noble auxiliary, who could expatiate freely over the regions virtually barred against me. He had been led to visit Cromarty by a brief description of its geology, rather picturesque than scientific, which had appeared in my legendary volume; and after I had introduced him to its ichthyolitic beds on both sides of the Hill and at Eathie, and acquainted him with their character and organisms, he set himself to trace ou
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