 In 1777 he was the first to try to ascend to the top of Triglav (2864 m), the highest peak in Slovenia, and reached Mali Triglav (2725 m).In 1789 he published a description of the 1786 debris flow at the Slano Blato Landslide.He was the first after Carl Linnaeus to distinguish the mineral dolomite from the limestone and described it already in 1778, 13 years earlier than Déodat Gratet de Dolomieu, as the "stinking stone" (, ).