Hatchets, daggers, and nuclei, or as they are characteristically called by the country people _livres de beurre_, from Grand-Pressigny, have been picked up in the bed of the Seine, at Limagne in Auvergne, in Brittany, at Saint Médard near Bordeaux, on the banks of the Meuse, and even as far north as the Shetland Islands. At Concise was found red coral from the Mediterranean, whilst the yellow amber of the Baltic was picked up in the Lake Dwellings of Switzerland, beneath the dolmens of Brittany, in sepulchral caves, such as those of Oyes (Marne) or Lombrives (Ariège), beneath the megalithic tomb of La Roquette, at Saint Pargoue (Hérault) beneath the dolmen of Grailhe (Gard), at Malpas, and at Baume (Ardèche).7 These are nearly all Neolithic tombs, though some few of them may date from the beginning of the Bronze age; but the cave-men of France owned amber even earlier than this, for five fragments have been found in the Aurensan Cave near Bagnères-de-Bigorre, which was inhabited in Palæolithic times. Jadeite and nephrite8 are met with in the Lake Dwellings of Switzerland and Bavaria, as in the caves of Liguria and Sardinia; chloromelanite9 in France, and obsidian10 in Lorraine, in the island of Pianosa and in the Cyclades. We have already spoken of the calaïte11 found beneath the dolmens of Brittany, and we may add now that it has also been found in the caves of Portugal and beneath the megalithic monuments of the south of France. Commerce developed rapidly during Neolithic times, and, as far as we can make out from traces left, its course was from the southeast to the northwest. Streams and rivers were followed by merchants as by emigrants, and at an extremely remote date the sea no longer arrested the journeys of men. At a recent meeting of the British Anthropological Institute, Miss Buckland dwelt on the resemblance in the material, shape, and ornamentation of a golden cup found in Cornwall, to other cups found at Mykenæ and at Tarquinii, and maintained that the Cornish cup must have been the work of the same artisans, and have been brought by commerce from what was then the extremity of the known world. It is not only in Europe that we can trace the relations established between men separated by vast distances, by oceans, and by apparently impassable deserts. The shells of the Atlantic and those of the Pacific, the copper of Lake Superior, the mica of the Alleghanies, and the obsidian of Mexico lie together beneath the tumuli of Ohio, and quite recently Mr. Putnam exhibited to the Society of Antiquaries a collection of jade celts and ornaments, some from Nicaragua, others from Costa Rica, and a hatchet with both edges sharpened from Michigan. No deposit of jade has so far been discovered on the American continent, so that we can only suppose these objects to have been brought from Asia at an unknown date. The marks they retain of having been rubbed up, and the holes made in them to hang them up, show what store was set by them.