GOEPPERT, HEINRICH ROBERT.

Ueber Einschluesse im Diamant. 7 lithographed plates. 4to, later blue wrappers; unopened, dampstaining to gutter of plates which also have scattered minor soiling. Haarlem, 1864 first edition. Natuurkindige Verhandelingen van de Hollandsche Maatschappij der Wetenschappen, Volume 2, part 19. "Goeppert concludes that the inclusions are actually organic in nature and that diamond formed in `Neptunian' rather than `Plutonian' processes... Shortly after the publication of this paper, the discoveries of diamonds in South Africa established the true matrix of the diamond and dispelled the notion that inclusions therein were organic in origin"--Sinkankas 2446.