Most of what was known about Franz Joseph Gall's (1758-1828) organology or prior to the 1820s came from secondary sources, including letters from correspondents, promotional materials, brief newspaper articles about his lecture-demonstrations, and editions and translations of some lengthier works of varying quality in German. Physician Ludwig Heinrich Bojanus (1776-1827) practiced in Vienna's General Hospital in 1797-1798; attended some of Gall's public lectures; and, in 1801-1802, became one of the first physicians to provide detailed reports on Gall's emerging organology in French and English, respectively. Although Bojanus considered the human mind to be indivisible and did not entirely agree with Gall's assumption that the brain consists of a number of independent organs responsible for various faculties, he provided valuable information and thoughtful commentary on Gall's views. Furthermore, he defended Gall against the charge that his sort of thinking would lead to materialism and cautiously predicted that the new system would be fruitful for developing and stimulating important new research about the brain and mind. Bojanus became a professor of zoology in 1806 and a professor of comparative anatomy in 1814 at Vilnius University, where, among other accomplishments, he established himself as a founder of modern veterinary medicine and a pioneer of pre-Darwinian and pre-Lamarckian evolutionism.