Not in population and adornment alone has Vienna progressed. Much has been done, or at least projected, for the comfort and health of the residents and for the increase of trade. The entire city has been repaved with Belgian pavement, the houses renumbered after the Anglo-American fashion. The railroads centring in the city are numerous, and the stations almost luxurious in their appointments. But the two chief enterprises are the Semmering aqueduct and the Danube Regulation. The former, begun in 1869 and completed in 1873, would do honor to any city. It is about fifty miles in length, and has a much greater capacity than the Croton aqueduct. The pure, cold Alpine water brought from two celebrated springs near the Semmering Pass, flows into the distributing reservoir on the South Hill, near the Belvedere Palace, at an elevation of one hundred and fifty feet above the city. The pressure is great enough to throw a jet nearly one hundred feet high from the fountain in the Schwarzenberg Square. The Danube Regulation, as its name implies, is an attempt to improve the navigation of the river. The Danube, which in this part of its course has a general flow from north-west to south-east, approaches within a few miles of Vienna. Here, at Nussdorf, it breaks into two or three shallow and tortuous channels, which meander directly away from the city, as if in sheer willfulness, and reunite at the Lobau, as far below the city as Nussdorf is above it. The "regulation" consists in a new artificial channel, cut in a straight line from Nussdorf to the Lobau. In length it is about nine miles, in breadth about twelve hundred feet: the average depth of water will be not less than ten feet. It was begun in 1869 and finished in April, 1875. This new channel, which passes the Leopoldstadt suburb a short distance outside the late exhibition grounds, will render unnecessary the transshipment of goods and passengers at Nussdorf and the Lobau respectively, and will also, it is hoped, prevent the inundations by which the low region to the north of the river has been so often ravaged.
Berlin is inferior to Vienna in antiquity and in variety of incident and association. The capital of the present German empire consisted originally of two small rival towns, or rather villages, standing almost side by side on opposite banks of the Spree. The elder, Cöln, was incorporated as a municipality in 1232: the other, Berlin, is mentioned for the first time in 1244. Both names are of Vendic (Slavic) origin, and designated villages of the hunting and fishing Vends, who were dispossessed by German colonists.
Cöln-Berlin, the marches of Brandenburg, East and West Prussia—in fact, all the now Germanized lands to the east of the Elbe—owe their Teutonic character to a great reflux, a reconquest so to speak, which is barely mentioned in the usual textbooks of German history, yet which is one of the most noteworthy phenomena in the development of modern Europe. At the beginning of the fourth century German tribes (German in the widest sense of the term) occupied the broad expanse from the Rhine to the Dwina and the head-waters of the Dnieper. A century later they had receded as far as the Vistula. Still another century later, about 500, the German linguistic domain was bounded on the east by the Ens, the Bohemian Hills, the upper Main, the Saal and the Elbe. The downfall of the Thuringian kingdom was the occasion of Slavic encroachments even on the left bank of the Elbe between Stendal and Lüneburg. This German recession, which boded the Slavization not only of Eastern but also of Central Europe, was due to various causes, many of which are veiled in the impenetrable darkness which still hangs over the early Middle Ages. The chief causes were undoubtedly the Germanic migration over the Roman world and the settlement of the Franks in Northern Gaul and the Saxons in England.
But with the Carolingian dynasty came a new era. Charles Martel, Pepin and Charlemagne aspired to universal monarchy. Not content with France, Northern Spain, Italy and Germany proper, Charlemagne, as we have already seen, recaptured the middle Danube. His successors in Germany, the Saxon, Franconian and Swabian emperors, continued the impulse, but gave it in the main a different direction. Instead of moving toward the south-east, where they would have encountered stubborn opposition from the already compact Hungarian nationality, they chose for their field of colonization (or recolonization) the east and north-east. Throughout the eleventh, twelfth, thirteenth and fourteenth centuries we observe a strong and unremitting tide of German peasants, burghers and knights flowing through and over Brandenburg, Pomerania, Mecklenburg, Silesia, the Prussian duchies, and even into Lithuania, Curland, Livonia and Esthonia. We have here an explanation of the want of interest taken by the Germans in the Crusades. While the kings of England and France, the barons and counts of Brabant and Italy, were wasting their substance and the blood of their subjects in hopeless attempts to overthrow Mohammedanism on its own ground, the Germans were laying the foundations—unconsciously, it is true—of a new empire. The lands wrested from the Slaves were to be the kingdom of Frederick the Great. The work was done thoroughly, almost as thoroughly as the Saxon conquest of Britain. The Obotrites, Wiltzi, Ukern, Prussians, Serbs and Vends were annihilated or absorbed. The only traces of their existence now to be found are the scattered remnants of dialects spoken in remote villages or small districts, and the countless names of towns bequeathed by them to their conquerors. These names are often recognizable by the terminations in and itz. The most conspicuous factor in this labor of colonization was the Teutonic order of chivalry, transferred to the Baltic from Palestine. Königsberg, Dantzic, Memel, Thorn and Revel were the centres or the advanced posts of the movement. At the end of the reign of the grand master Winrich von Kniprode (1382) the Germanization of the region between the Elbe and the Niemen—the Polish province of Posen perhaps excepted—may be regarded, for all practical purposes, as finished. The acquisition of Brandenburg by the Hohenzollerns only solidified the conquest and guaranteed its future. It is safe to assume that even a large share, perhaps the greater share, of Poland itself would have been overrun in like manner but for the Hussite wars and the Thirty Years' war. The unfortunate Peace of Thorn (1466), whereby the lands of the Teutonic order and of the Brethren of the Sword became—in name at least—fiefs of the Polish crown, was due to internal dissensions among the German colonists and also to the distractions in Bohemia.
This apparent digression was necessary to a right understanding of the character of Berlin and its neighborhood in comparison with Vienna. Berlin was at the start a frontier post, but, unlike Vienna, it soon ceased to be one. Colonization and conquest left it far to the rear as an unimportant and thoroughly German town. The border-land of language and race was advanced from the Spree to the Niemen and Vistula. The language of these north-eastern districts is worthy of note. The knights of the Teutonic order were chiefly from South Germany, the inferior colonists from Low Germany of the Elbe, Weser and Rhine. Hence the necessity for a lingua communis, a mode of expression that should adapt itself to the needs of a mixed population. The dialect which proved itself most available was one which stood midway between High (South) and Low (North) German, and which itself might almost be called a linguistic compromise—namely, the Thuringian, and more especially