Ma'aseh Toviyyah, a comprehensive encyclopedic work first published in 1707, remains the defining contribution of Tobias Cohn to medical literature. His career spanned across diverse geographies and political landscapes, bridging the academic traditions of Europe with the clinical environment of the Ottoman Empire, where he served five consecutive sultans as a personal physician.
Academic Foundation and Early Life
Born in Metz in 1652, Tobias Cohn underwent a rigorous intellectual training that prepared him for a life of cross-cultural medical service. He pursued his higher education at the University of Frankfurt an der Oder, supported by the elector of Brandenburg, before completing his doctorate in medicine at the University of Padua. His linguistic capabilities were extensive, encompassing ten languages including Hebrew, German, Turkish, and Latin, which facilitated his integration into different scientific communities.
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Cohn practiced medicine in multiple locations, including Frankfurt (Oder), Edirne, and Istanbul. During his time in the Ottoman Empire, he acted as a physician to a succession of sultans: Mehmed IV, Suleiman II, Ahmed II, Mustafa II, and Ahmed III. His transition from European academic centers to the Ottoman court allowed him to document local symptoms and medicinal herbs that were previously undocumented in Western medical texts.
Scientific Contributions
The Ma'aseh Toviyyah serves as an eight-part survey of scientific and theological knowledge of the era. Within this text, Cohn provided the primary description of plica polonica and included a specialized list of medicinal remedies in three languages. Notable illustrations within the book include a comparison between the human body and the architecture of a house, alongside detailed diagrams of mathematical and astronomical instruments.
Final Years
In 1724, Cohn relocated to Jerusalem, where he resided for the final five years of his life. Following his death in 1729, he was interred at the Mount of Olives Jewish Cemetery. His work continued to influence medical discourse long after his passing, with the Ma'aseh Toviyyah seeing multiple reprints in Venice throughout the 18th and 19th centuries.
Fast facts
- Born: 1652, Metz
- Died: 1729, Jerusalem
- Citizenship: Germany, Ottoman Empire
- Education: University of Frankfurt an der Oder, University of Padua
- Notable Work: Ma'aseh Toviyyah (1707)
- Burial Site: Mount of Olives Jewish Cemetery
- Language Proficiency: 10 languages including Hebrew, German, and Turkish
- Professional Role: Physician to five Ottoman sultans
Questions readers ask
What subjects are covered in Ma'aseh Toviyyah?
The work is divided into eight parts covering theology, astronomy, medicine, hygiene, syphilitic maladies, botany, cosmography, and an essay on the four elements.
Which Ottoman sultans did Tobias Cohn treat?
He served Mehmed IV, Suleiman II, Ahmed II, Mustafa II, and Ahmed III.
Achievements
- Notable work: Ma'aseh Toviyyah
- Fields: medicine



