The activity and the academic environment in the parental home constituted a true school of seriousness, rigor and tenacity necessary for the scientific research of Iacob Czihak. At the age of 18, Iacob Czihak began his medical studies at the University of Heidelberg, where he obtained his doctorate in 1825 with a dissertation on ectopic pregnancy.
Employed in the Russian army after the outbreak of the Russo-Turkish war, the young doctor stands out, being distinguished with the Order of Stanislaus Class II and the title of knight. He returned to Iasi and he actively contributed to combatting the plague epidemic. In 1830, together with Mihail Zotta, he took the initiative to create a medical reading circle that would carry out its activity right in his house.
In 1833, Dr. Mihail Zotta and Dr. Jakob Czihak founded in the capital of Moldavia the first Scientific Society in Romania and in the Balkan region.
The creation of the Society of Physicians and Naturalists in Iasi exerted a crucial scientific, cultural and social influence, representing in fact the nucleus of scientific development in the modern era. In this context of crystallization of modern sciences, it is worth mentioning the decisive role of the newly established society in founding countless museums, libraries, research institutes, hospitals, clinics, faculties and universities in the Romanian space. Another extremely important role was the intensification of exchanges of exhibits, magazines, specialized books and as a result the creation of deep links of scientific cooperation at national and European level. This process in its infancy will lead to dramatic changes in the history and evolution of the scientific world in the sense of changing priorities, more precisely material resources are replaced by scientific and informational knowledge.
The textbook of "Natural History" designed by Czihak is of great importance, being the first textbook of natural sciences printed in Romanian and published in 1837.
Czihak created a naturalistic current in Moldova. His work "Natural History" was the first textbook of natural sciences in Romanian.
The creation of the Museum of Natural Sciences in 1834 is mainly due to Czihak's initiative and efforts.
Jacob Czihak died in 1887 in his hometown of Aschaffenburg. His tireless work was not in vain and his most vivid wish was fulfilled. On the facade of the house where he founded the first scientific society in Romania and in the Balkan Peninsula, which still serves today as the company's headquarters, appears a tablet with the same name he gave to society: the Society of Physicians and Naturalists of Iasi.
His scientific activity is marked by the foundation of the Museum of Natural Sciences the authorship of one of the first scientific books in Romanian language: “Istoria naturala” in the year 1837.
Last but not least he published a lot of other books and scientific articles during his career. From 1830 on he hold close contact to the scientific developments in Europe by writing hundreds of letters to all kind of doctors and scientists, most of them in German. He brought to Iasi a lot of modern ideas as well as the scientific way of life related to the 19th century scientific revolution, and inspired generations of scientists.