In an ad in the Magazin fur Pharmacie for February 1828 the Heidelberger Mineralien-Comptoir (Leonhard still declined to attach his own name to any advertisements) offered a number of "Collections of Minerals, Fossils and Crystal Models," including (1) an oryktognostic collection of 650 mineral specimens organized according to Leonhard's Handbuch der Mineralogie, (2) a gemstone collection of 50 pieces, (3) a geognostic
collection of 600 specimens, (4) a pharmaceutical collection of minerals, (5) a collection of 700 minerals of economic value, (6) a fossil collection, and (7) a collection of 123 crystal models.
In 1850, Kingsley wrote to an acquaintance: Those who fancy me a "sentimentalist" and a "fanatic" little know how thoroughly my own bent is for physical science; how I have been trained in it from earliest boyhood; how I am happier now in classifying a new polyope, or solving a geognostic
problem of strata ...
We cannot too often bring to our recollection, that every mineral species is to be determined from the aggregate of all the characters, combined with the geognostic
relations; a mode of investigation which, independent of the certainty it gives to our determination of the species, prepares us for the higher study of geognosie.
Koksharov's report, published in the Mining Journal, was entitled "Geognostic
observations in several districts of European Russia."