Synthesized answer
The provided passages do not contain information about what questions remain unanswered regarding the "Vom Baue des menschlichen Körpers" [1]. The title and page count are listed, but no specific content detailing unanswered questions is present.
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