Author: König, J. G. and J. J. Ferber
Title: Observationes mineralogicae in India Orientali.
Description: Uppsala, Societas Regia Scientiarum Upsaliensis, 1784. 4to (26.8 x 20.6 cm). 10 pp. Not bound. = Early observations on the mineral resources of India, and in particular of granites, quartzes (onyx, achates, etc.), calcarous stones, etc. Written jointly by the Swedish mineralogist Johan(n) Jacob Ferber (1743-1790), and the Swiss naturalist Johann Gerhard König (1728-1785). König, a pupil of Linnaeus and corresponent of Sir Joseph Banks, died in India. The paper was based on his personal observations. Published in the society's Nova Acta, volume 4. Uncut, with ample margins. Rare.

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