ContentsCHAP.I.[The Professor's Persistence]II.[The Professor's First Excursion]III.[The Professor's Return]IV.[The Investigation]V.[The Investigation Continued]VI.[Two Wounded Hands]VII.[The Two Requests]VIII.[Quiet Weeks]IX.[An Exploring Party]X.[An Accident?]XI.[Forced Seclusion]XII.[An Arrest]XIII.[An Old Chest]XIV.[The End of the Professor's Holiday]