[Footnote 287: Howard, German Empire, 21.] [Footnote 288: Matters placed under the supervision of the Empire and made subject to Imperial legislation are enumerated in the sixteen sections of Article 4 of the constitution. Dodd, Modern Constitutions, I., 327-328.] [Footnote 289: Laband, Das Staatsrecht des deutschen Reiches (2d ed.), I., 102-103.] In passing, it may be observed that there is, in fact, a distinct tendency toward the reduction of the spheres of authority which formerly were left to the states. One of the means by which this has been brought about is the establishment of uniform codes of law throughout the Empire, containing regulations respecting a multitude of things which otherwise would have been regulated by the states alone. Most important among these is the great Civil Code, which went into effect January 1, 1900. Another means to the same end is the increase in recent years of Imperial legislation relating to workingmen's insurance, factory regulations, industrial conditions, and other matters of a social and economic nature. Not infrequently in recent times have the states, or some of them, raised protest against this centralizing tendency, and especially against the "Prussianization" of the Empire which it seems clearly to involve. In many states, especially those to the south of the Main, the separatist tradition is still very strong. In Bavaria, more than anywhere else, is this true, and in 1903 the new Bavarian premier, Baron Podevils, was able to arouse genuine enthusiasm for his government by a solemn declaration before the diet that he and his colleagues would combat with all their might "any attempt to shape the future of the Empire on lines other than the federative basis laid down in the Imperial constitution."