With Episode 21 (2.9), we begin the second of the three essays comprising The Maine Woods, "Chesuncook," in which Thoreau navigates from Boston to Bangor, then travels by wagon to the foot of Moosehead Lake, then by canoe to its head, before porting to the Penobscot River. The episode concludes with the second half of Jewett's long ninth chapter, "At Dr. Leslie's."