Wilhelm, Gottlieb Tobias; Unterhaltungen aus der Naturgeschichte. Des Mineralreichs. 1828

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Wilhelm, Gottlieb Tobias; Unterhaltungen aus der Naturgeschichte. Des Mineralreichs. Zweiter Band, Augsburg 1828. Octavo, pp. 958, xxx, 68 plates (most hand-colored).
The volume is complete and in a contemporary calf and marbled boards binding with a red morocco and gilt spine title label. The binding is tight, wear to boards and vertical crease in spine. The text has light to moderate foxing and some plates have light foxing. Over all in good+ condition. 

Gottlieb Tobias Wilhelm (1785–1811) was a German theologian who wrote a twenty-seven volume natural history encyclopedia, "Unterhaltungen aus der Naturgeschichte", which described and illustratred every aspect of nature. The last two volumes covered mineralogy. This is the first edition of the second mineralogy volume. Wilhelm, who wrote the accompanying text, based his information on the writings of the famous German mineralogist Werner. After an introduction that explains what the science of mineralogy is about, volume one describes oryctognosie, external characteristics of minerals, crystal morphology, the different forms of minerals, transparency, hardness, etc. This is followed by a lengthy section describing geognosie along Wernerian theories. Volume two; which is offered here in its introduction describes the systematics of mineral classification and the practical aspects of collecting minerals. The remaining portion of the book is devoted to a descriptive mineralogy. However, Wilhelm's work is almost always sought today for the many quaint, hand-colored plates it contains that show minerals, fossils, geologic phenomena, laboratory apparatus and scenic views.