"The Prussian State had also long been an extensive owner of coal, potash, salt, and iron mines. In 1907 a law was passed giving the State prior mining rights to all undiscovered coal deposits. In general, however, it must cede those rights to private parties on payment of a royalty; but the law makes an exception of 250 'maximum fields,' equal to about 205 square miles, in which the State itself will exercise its mining rights. It has recently reserved this amount of lands adjacent to the coal fields on the lower Rhine and in Silesia. The State has already about 80 square miles of coal lands in its hands, from which it is taking out about 10,000,000 tons of coal a year. Its success as a mine owner, however, appears to be less marked than as a railway proprietor; experienced business men even assert that the State's coal and iron mines would be operated at a loss if proper allowances were made for depreciation and amortization of capital, as must be done in the case of private companies. The State also derives comparatively small revenues from its forest and farming lands of some 830,000 acres, which were formerly the property of the Crown.... "The most important State tax is that on _incomes_, which is in all cases graduated down to a very low rate on the smallest income; in Prussia there is no tax on incomes less than $214. The cities also collect the bulk of their revenues from incomes, using the same classification and sliding scale as the State. "A highly interesting innovation in taxation is the 'unearned increment' tax on land values, first adopted by Frankfort-on-the-Main in 1904, and already applied by over 300 German cities and towns.... "The bill before the Reichstag [since become a law--W. E. W.] extends sick insurance to farm laborers and household servants, a change which will raise the burden of this system for employers from $24,000,000 to $36,000,000. The bill also provides for pensioning the widows and orphans of insured laborers at an estimated additional expense of about $17,000,000.... "A better result of the insurance systems than the modest pensions and the indemnities that they pay is to be found in their excellent work for protecting health and prolonging life. Many offices have their own hospitals for the sick, and homes for the convalescent.... "All these protective measures have already told effectively upon the death rate for tuberculous diseases. In the three years ending with 1908, deaths from pulmonary tuberculosis dropped from 226.6 to 192.12 per 100,000.