Kershtens Johann Christian

Doctor of Medicine and Master of Philosophy, arrived in Russia from Leipzig in 1758, when, and began lecturing on chemistry and mineralogy, physics, theoretical and experimental. In 1763, Mr.. read mineralogy with rudokopnoy and assay chemistry, in 1764, Mr.. - Medical veschestvoslovie. In 1769, Mr.. delivered a public lecture in Latin, which appeared later in Russian "Guide and Rules of doctors for rural residents, employees dissatisfied with the multiplication of the number of people in Russia, with the best hand marking the author's observation. In 1770, Mr.. Kershtens left the service and went home.