It was in Brittany that the art of erecting dolmens reached its fullest development, and it is there that the relics found in the tombs are of the most important character. Nowhere do we find weapons more carefully preserved, more delicately finished ornaments of a more remarkable kind. The Museum of Vannes, where most of the valuable objects found in the excavations are preserved, possesses quartzite, fibrolite, diorite, and even nephrite and jadeite hatchets, some of which materials are not native to Europe; as well as amber beads and a necklace of calaïte, that precious stone described by Pliny, and which long remained unknown after his time. Hatchets or celts are more numerous than any other objects found beneath dolmens of Brittany. A report, read by M. R. Galles to the Société Polymathique of Morbihan, enumerates the objects found with the dead beneath the dolmen of Saint-Michel. This report is a regular inventory, in which figure eleven jade celts of great elegance of form and varying from about three and a half to sixteen inches, two larger celts of coarse workmanship both broken, twenty-six small fibrolite celts with sharp edges, nine pendants, more than one hundred jasper beads which had been part of a necklace, and lastly an ivory ring. Other megalithic monuments were not less rich in relics. Thirty hatchets were picked up at Tumiac; more than a hundred, nearly all of tremolite, at Mané-er-H’roek; which were remarkable for their regularity of form, their polish, and the variety of their colors. They seldom bear any traces of having been used, and in many cases they appear to have been intentionally broken, probably in conformity with some funereal rite. Finistère, though not so rich as Morbihan, furnished an important contingent. The excavations of the Kerhué-Bras tumulus brought to light a sepulchral chamber which contained thirty-three arrow-beads. Beneath other dolmens were picked up a number of little plaques of slate, all pierced with holes; one of these pieces of slate, which was oblong in form, bore on it a representation of a sun with rays surrounded by ornaments not easy to make out. The Breton megalithic monuments also contained numerous fragments of pottery, some of which had formed part of vases without stands, such as those found at Santorin and at Troy.