Rhenish Prussia, the most westerly and most densely populated of the Prussian provinces, lies within the valleys of the Rhine and the Lower Moselle, and borders on Belgium and the Netherlands; is mountainous and forest-clad, except in the fertile plains of the N. and in the rich river valleys, where vines, cereals, and vegetables are extensively cultivated; large quantities of coal, iron, zinc, and lead are mined; as an industrial and manufacturing province it ranks first in Germany. Coblenz (capital), Aix-la-Chapelle, Bonn, and Cologne are among its chief towns; was formed in 1815 out of several smaller duchies.
Population (circa 1900) given as 4,710,000.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Rheingau * Rheochord