Check the listing for details. Marcus Elieser Bloch. Listed at 326.13 USD. Marcus Élieser Bloch Marcus Élieser Bloch was a German physician and naturalist, born in 1723 in Ansbach and died on August 6, 1799 in Karlsbad. He is considered one of the leading ichthyologists of the 18th century. Coming from a very modest background, he is almost illiterate, at the age of nine he is unable to read German. His limited knowledge of Hebrew and rabbinical literature enabled him to obtain a position as tutor in the house of a Jewish surgeon in Hamburg. There, he learns German and a little Latin, he also begins to study anatomy. He left for Berlin where he devoted himself to the study of all branches of natural history and to medicine. He passed his title of doctor of medicine in Frankfurt-on-the-Oder in 1747 and settled in Berlin where he practiced medicine. He published a.