"However," continues Klaproth, "after meeting again the Sarmatic Medes of the ancients in this people, it is still more surprising also to recognize the Alains, who occupied the districts north of the Caucasus." He adds: "It follows from all we have said, that the Ossetes, who call themselves Irons, are the Medes, who assumed the name of Irans, and whom Herodotus styles the Arioi. They are, moreover, the Sarmatic Medes of the ancients, and belong to the Median colony founded in the Caucasus by the Scythians. They are the As or Alains of the middle ages. And lastly, they are the Iasses of Russian chronicles, from whom some of the Caucasus range took their name of the Iassic Mountains." This is not the place to discuss identifications belonging to the realm of criticism. We will content ourselves with adding to these remarks of Klaproth on the Ossete language, that its pronunciation resembles that of the Low-German and Slavonic dialects. The Georgians differ essentially from the neighbouring nations, alike in their language and in their physical and moral qualities. They are divided into four principal tribes--the Karthalinians, Mingrelians, and Shvans (or Swanians), inhabiting the southern range of the Caucasus, and the Lazes, a wild robber tribe. As we have seen, the facts collected by Klaproth are very curious, and throw an unexpected light on the migration of ancient races. The penetration and sagacity of the traveller were marvellous, and his memory was extraordinary. The scholar of Berlin rendered signal services to the science of philology. It is to be regretted that his qualities as a man, his principles, and his temper, were not on a level with his knowledge and acumen as a professor. We must now leave the Old World for the New, and give an account of the explorations of the young republic of the United States. So soon as the Federal Government was free from the anxieties of war, and its position was alike established and recognized, public attention was directed to the "fur country," which had in turn attracted the English, the Spanish, and the French. Nootka Sound and the neighbouring coasts, discovered by the great Cook and the talented Quadra, Vancouver, and Marchand, were American. Moreover, the Monroe doctrine, destined later to excite so much discussion, already existed in embryo in the minds of the statesmen of the day. In accordance with an Act of Congress, Captain Merryweather Lewis and Lieutenant William Clarke, were commissioned to trace the Missouri, from its junction with the Mississippi to its source, and to cross the Rocky Mountains by the easiest and shortest route, thus opening up communication between the Gulf of Mexico and the Pacific Ocean. The officers were also to trade with any Indian tribes they might meet. The expedition was composed of regular troops and volunteers, numbering altogether, including the leaders, forty-three men; one boat and two canoes completed the equipment.