Aside from Natural Sciences von Salis was also interested in agriculture, history and education and maintained contacts with researchers from abroad. He traveled often and wrote about his trip to Sicily and Naples in 1788–89. He described in detail the specifics of irrigation of the French Jura mountains.
Reisen in verschiedene provinzen des Königreichs Neapel, 1793
He wrote Reisen in verscheidene Provinzen des Königreichs Neapel, Travels through various provinces of the Kingdom of Naples (Zürich & Leipzig, 1793), Beitrage zur natürliche und ökonomie Kenntniss des Königreichs beeder Sicilien, 1790 and Streifereyen durch den franzische Jura während den Jahren 1799 und 1800, 1805. He edited and wrote for three journals:Der Sammler (Collector), Der neue Sammler (New Collector) (1806–1809) and Zeitschrift "Alpina".