One of the best modern examples of this kind is Vogel's map of Germany, on a scale of i :500,000.
Reymann's well-known Specialkarte von Mittel Europa (: 200,000), acquired by the Prussian government in 1874 (it will ultimately consist of 796 sheets), a government and Liebenow's map of central Europe (1:300,000) and C. Vogel's beautiful map of Germany (1: 500,000).
C. Vogel's spectroscopic measures in 1889.2 Previously to each obscuration, the star was found to be moving rapidly away from the earth; its velocity then diminished to zero pari passu with the loss of light, and reversed its direction during the process of recovery.
Coinciding as the carrying out of Vogel's policy did with a rising wool market, it for a time helped to bring great prosperity, an influx of people and much genuine settlement.
Vogel's Die Normannen and das Frankische Reich (1906).