“…While Bunsensname is nowadays universally well-known thanks to his founding,with Gustav Kirchhoff,ofthe field of spectroscopy (for which his burner,d eveloped with Peter Desaga and Henry Roscoe,was used as asource of heat;see the SI for details and references) and although he was wellknown in both organic and analytical chemistry in the early 1840s due to his seminal work on dimethylarsenic (cacodyl) and gas analysis,h is heart belonged to geology.H eh ad studied chemistry,p hysics,m athematics,g eology and mineralogy in Gçttingen under Stromeyer, [3] an analytical chemist and mineralogist with an interest in arsenic,and he obtained his doctorate in chemistry and physics for ad issertation, Enumeratio ac descriptio hygrometrorum, quae inde aS aussurii temporibus proposita sunt,w hich at the same time was the successful entry for ap rize competition. [4] It was to be typical of his future work, which would be more about apparatus and measurement than chemistry.H er etained Figure 1.…”