as that presented by the Australians, is not likely to be met with. It is therefore very probable that some of the variations may be accounted for by the blending of different ethnical elements in one race. I am consequently inclined to view the interments in these two caves as having been made by the same people, in spite of the small cranial difference manifested by the Cefn skull. The cave in Brysgill, a small ravine leading into the valley of the Elwy, explored by Mr. Mainwaring and Mrs. Williams Wynn in 1871, furnished evidence of the occupation of man, probably of the neolithic age. From a dark layer composed of loam, black with fragments of charcoal, a flint arrow-head, a core, a flake, and broken bones of the horse, _Bos longifrons_, goat, and dog, were obtained, as well as a few human bones which had not been broken by design. The excavations carried on in the small tunnel-cave of Plas-Heaton, by Mr. Heaton and Professor Hughes, have shown that it was inhabited at two different ages. In the upper or prehistoric stratum were broken bones of the dog, badger, goat, _Bos longifrons_, and stag; while in the lower, or pleistocene, were the remains of the hyæna, reindeer, cave-bear, and the lower jaw of the glutton. _The Chambered Tomb near Cefn, St. Asaph._ While the caves at Perthi-Chwareu were being explored, the accidental discovery of human remains in the cairn of Tyddyn Bleiddyn, near Cefn, St. Asaph, in 1869, led to a systematic examination of its contents by Mrs. Williams Wynn, under the superintendence of the Rev. D. R. Thomas, myself, and the Rev. H. H. Winwood, which has resulted in the proof, that the people who buried their dead in caves used stone-chambered tombs for the same purpose. The cairn of loose fragments of limestone had been removed for road-mending before the cap-stones of the stone chamber were exposed, and these were broken before any scientific observation was made. The Rev. D. R. Thomas, however, rescued many of the human remains from destruction, and began the exploration which defined the extent of the chamber A (Fig. 39). [Illustration: FIG. 39.--Plain of Chambered Tomb at Cefn.]