In passing downwards on the fishing village of Gardenstone, mainly in the hope of procuring a guide to the ichthyolite beds, I saw a laborer at work with a pickaxe, in a little craggy ravine, about a hundred yards to the left of the path, and two gentlemen standing beside him. I paused for a moment, to ascertain whether the latter were not brother-workers in the geologic field. "Hilloa!--here,"--shouted out the stouter of the two gentlemen, as if, by some _clairvoyant_ faculty, he had dived into my secret thought; "come here." I went down into the ravine, and found the laborer engaged in disinterring ichthyolitic nodules out of a bed of gray stratified clay, identical in its composition with that of the Cromarty fish-beds; and a heap of freshly-broken nodules, speckled with the organic remains of the Lower Old Red Sandstone,--chiefly occipital plates and scales,--lay beside him. "Know you aught of these?" said the stouter gentleman, pointing to the heap. "A little," I replied; "but your specimens are none of the finest. Here, however, is a dorsal plate of Coccosteus; and here a scattered group of scales of Osteolepis; and here the occipital plates of _Cheirolepis Cummingiae_; and here the spine of the anterior dorsal of _Diplacanthus striatus_." My reading of the fossils was at once recognized, like the mystic sign of the freemason, as establishing for me a place among the geologic brotherhood; and the stout gentleman producing a spirit-flask and a glass, I pledged him and his companion in a bumper. "Was I not sure?" he said, addressing his friend: "I knew by the cut of his jib, notwithstanding his shepherd's plaid, that he was a wanderer of the scientific cast." We discussed the peculiarities of the deposit, which, in its mineralogical character, and generically in that of its organic contents, resembles, I found, the fish-beds of Cromarty (though, curiously enough, the intervening contemporary deposits of Moray and the western parts of Banffshire differ widely, in at least their chemistry, from both); and we were right good friends ere we parted. To men who travel for amusement, incident is incident, however trivial in itself, and always worth something. I showed the younger of the two geologists my mode of breaking open an ichthyolitic nodule, so as to secure the best possible section of the fish. "Ah," he said, as he marked a style of handling the hammer which, save for the fifteen years' previous practice of the operative mason, would be perhaps less complete,--"Ah, you must have broken open a great many." His own knowledge of the formation and its ichthyolites had been chiefly derived, he added, from a certain little treatise on the "Old Red Sandstone," rather popular than scientific, which he named. I of course claimed no acquaintance with the work; and the conversation went on.