In 1843 Schmarda was appointed Chief Field Physician to the
dragoon regiment, a mounted infantry ("Dragonerregiment"), and at the same time acted as assistant to "special natural history" at the Josephsakademie. During two scientific journeys to the Adriatic Sea, in 1844 and 1846, he made collections of marine life. In 1848, he became a teacher of natural history and geography at the secondary school in Graz. In 1848/49 he lectured at Joanneum on anthropology as a science and represented the School of Agriculture in 1848 and 1850. He worked on the infusoria (Protozoa) and produced a monograph
Kleine Beiträge der Naturgeschichte der Infusorien in 1846. In 1850 he was appointed
professor at the
University of Graz, where he founded the Zoological Museum (in the present day
Joanneum Natural History Museum), and in 1852 at
Prague. From 1853–1857 he traveled around the world, a trip which was financed by Franz Ritter von Fridau. He published on his travels in 1861 in three volumes of
Reise um die Erde in den Jahre 1853-1857. His scientific results were published in two volumes under the title
Neue wirbellose thiere beobachtet und gesammelt auf einer reise um die erde 1853 bis 1857. He had a special interest in the inveterbrates, particularly marine worms. He was dismissed from his position in Prague 1855 for exceeding his vacation and he lived on Fridau's estate. His work on zoology with Professor Unger was considered atheistical and not supported by the
Ultramontane party in power. He was rehabilitated in 1861 and in 1862 he was appointed professor at the
University of Vienna. He served as a court councillor for the Austrian Academy of Sciences and during this period he published a two volume work titled
Zoologie (1871,72). In 1883 he retired from service, and visited
Spain and the African coast in 1884, 1886, and 1887. ==Legacy==