Synthesized answer
The provided passages do not contain enough information to answer the question about the central thesis of "Vom Baue des menschlichen Körpers". The passages only list the title, authors, and number of pages of the work [Passage 1]. This information does not elaborate on the content or main argument of the book.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: Samuel Thomas von Sömmering vom Baue des menschlichen Körpers by Rudolph Wagner, Samuel Thomas Sömmerring (von.), Theodor Ludwig Wilhelm Bischoff Pages: 386