Principal states on the borders of the empire: I. Germania. Boundaries: on the south the Danube, on the north the sea, on the west the Rhine, on the east undetermined, though the Vistula is generally regarded as such. Principal rivers: the Danubius, Rhenus (Rhine), Albis (Elbe), Visurgis (Weser), Viadrus (Oder), and the Vistula; the Lupias (Lippe) and Amisia (Ems) are likewise frequently mentioned. Mountains and forests: the Hercynian forest, a general name for the forest mountains, particularly of eastern Germany. Melibocus (the Hartz), Sudetus (the Thuringian forest); the forest of Teutoburg, to the south of Westphalia, etc. It would be useless to seek for a general political division, or for the cities, of ancient Germany; we can only point out the situation of the principal tribes. It is necessary, however, to precede this by two observations: 1. The same territory, in the tide of forcible emigration and conquest, and particularly after the second century, often changed its inhabitants. 2. The names of some of the principal tribes often became that of a confederacy. The principal tribes in the period of Augustus were, in northern Germany; the Batavi in Holland; the Frisii in Friesland; the Bructeri in Westphalia; the lesser and larger Chauci in Oldenburg and Bremen; the Cherusci, likewise the name of a confederation, in Brunswick; the Catti in Hesse. In southern (central) Germany: the Hermunduri in Franconia; the Marcomanni in Bohemia. Alemanni. The Alemanni, not the name of a single tribe, but of a confederation, are first mentioned in the third century: in the period of Augustus these tribes, and the principal of those of eastern Germany, which gradually became known, were included under the general name of Suevi. Suevi.
Scandinavia.
The northernmost countries of Europe were considered as isles of the German ocean, and therefore regarded as belonging to Germany. They were Scandinavia, or Scandia (southern Sweden), Nerigon (Norway), and Eningia, or probably Finningia (Finland). The northernmost island was called Thule.
Sarmatia.
The north of Europe, from the Vistula to the Tanais (Don), was comprised under the general name of Sarmatia; but beyond the territory about the Danube, and especially Dacia (see above, p. 407), they were only in a slight degree acquainted with the coast of the Baltic, by the amber trade.
Parthia.
In Asia the Roman empire was bounded by Great Armenia (see above, p. 19, and 299), the Parthian empire from the Euphrates to the Indus (see above, p. 19—22), and the peninsula of Arabia (see above, p. 19).
India.
Eastern Asia, or India, became known to the Romans by a commercial intercourse carried on between them, and which began soon after the conquest of Egypt. It was divided into India on this side the Ganges, that is: 1. The territory between the Indus and Ganges; 2. The peninsula on this side, the western coast of which in particular (Malabar), was very well known; and, 3. The island of Taprobana (Ceylon), and India beyond the Ganges, to which also the distant Serica belonged: but of all these countries they had but a very imperfect knowledge.
Africa.