The new constitution has stood the test. The number of states of which the empire consists has remained unaltered;[3] occasional disputes have been settled harmoniously in a legal manner. The special rights reserved to Bavaria and Württemberg have not proved, as was feared, a danger to the stability of the empire. Much apprehension had been caused by the establishment of a permanent committee for foreign affairs in the Bundesrat, over which the Bavarian representative was to preside; but the clause remained a dead letter. There is no record that the committee ever met until July 1900, when it was summoned to consider the situation in China; and on that occasion it probably formed a useful support to the government, and helped to still apprehension lest a too adventurous policy should be pursued. Another clause determined that in a division in the Reichstag on any law which did not concern the whole empire, the representatives of those states which were not concerned should not vote. This, had it been retained, would have destroyed the coherence of the Reichstag as representative of the whole nation. It was repealed in 1873. The permission to maintain diplomatic missions has been equally harmless: most of the states have recalled all their diplomatic representatives; Saxony, Bavaria and Württemberg have maintained only those at Vienna, the Vatican and at St Petersburg. Bavaria has even voluntarily adopted many imperial laws from which it was legally exempted; for instance, the laws of settlement.
If the states have been loyal to the empire, the imperial government has also respected the constitutional privileges of the states. The harmonious working of the constitution depends on the union of policy between the empire and Prussia, for it is the power of Prussia which gives strength to the empire. This was practically secured by the fact that the emperor, who is king of Prussia, appoints the chancellor, and the chancellor is generally president of the Prussian ministry as well as minister of foreign affairs--in his person the government of the two is identified. For twenty years the double office was held by Bismarck, who, supported as he was by the absolute confidence of the emperor, and also of the allied princes, held a position greater than that ever attained by any subject in modern Europe since the time of Richelieu. For ten months in 1873 he, indeed, resigned the office of minister-president to Roon; and in the same way Caprivi, during the years 1893-1894, held the chancellorship alone; but in neither case was the experiment successful, and Hohenlohe and Bülow adhered to the older plan. So important is the practical co-operation of the imperial administration and the Prussian government, that it has become customary to appoint to seats in the Prussian ministry the more important of the secretaries of state who administer imperial affairs under the chancellor. Delbrück, head of the imperial chancery, had held this position since 1868; in 1877 Bülow, secretary of state for foreign affairs, was appointed Prussian minister, and this has become the ordinary practice. One result of this is to diminish the control which the Prussian parliament is able to maintain over the Prussian ministry.