Dr. Falconer and Captain Cautley soon found that they had "struck oil" in the Sivalik Hills, or, in other words, had come upon one of Nature's great graveyards, full of material most valuable to the palæontologist--one which, extending for hundreds of miles, might perhaps prove to be as rich in relics of the world's "lost creations" as the lake-basin in Wyoming, where Professor Marsh discovered his Dinocerata and other extinct types. Let us give Dr. Falconer and Captain Cautley their due. They found themselves suddenly confronted with a perfect mine of wealth, in a far country, where the ordinary means resorted to by men of science for determining extinct types and species, by comparison with living forms, were not to be obtained, for there were no libraries and no museums of comparative anatomy in that remote quarter of India. But Dr. Falconer was not the man to be baffled by such drawbacks, which would have deterred and discouraged some men. He appealed to the living forms that abounded in the surrounding forests, rivers, and swamps, and took toll of them to supply the want. Nature herself became his library and his museum. Skeletons of all kinds were prepared; the extinct forms he collected were compared with their nearest living allies, and a valuable series of "Memoirs" by himself and Captain Cautley was the result.[43] [43] These appeared in the _Asiatic Researches_, the _Journal of the Asiatic Society of Bengal_, and in the _Geological Transactions_ of the London Geological Society.