The next evening, Tom and Huck try to use the case-knives to dig a tunnel under the cabin, but after a few hours, they realize they need better tools. Tom decides they will use pick-axes and shovels and pretend that they are case-knives. The next night, Tom and Huck easily dig into Jim's cabin and wake him. Jim listens to Tom's plans and agrees to go along with them even though he thinks they do not make sense. Tom assures Jim that they will change the plans immediately if something goes wrong.
The boys begin smuggling "escape" tools into the cabin, and Aunt Sally notices that items are missing from the house. To confuse her, Tom and Huck continually take and replace sheets and spoons until Aunt Sally does not know how many she had to start with. Finally they tear up one of the sheets and smuggle it into Jim's cabin along with some tins plates. Following Tom's instructions on how to write mysterious messages, Jim marks on the tin plates and then throws them out the window.
The next day, Tom continues to find new distractions for Jim's escape. Tom writes down some inscriptions for Jim to carve into the wall but then realizes the walls are wooden. To be done properly and according to the books, Tom says they must have stone. The boys try to roll a large grindstone into the cabin but are not strong enough. Jim climbs out of the cabin and helps them roll the stone the rest of the way. Despite Jim's protests, Tom decides that the cabin needs other residents, including spiders and snakes, in order to make it a proper dungeon and Jim a proper prisoner.
In Chapters 36 through 38, the novel slips further into the farce as neither Huck nor Jim understand why they must perform all of these ludicrous acts before Jim can escape. Ironically, Huck and Jim view Tom as a representative of society and education, and because of this, they feel that Tom must know the best way for them to escape.
Jim's continued enslavement is both absurd and grotesque and is a harsh comment on the racial condition of post-Civil War America. As mentioned earlier, Miss Watson has already set Jim free in her will, but the ability to transcend and change society's perception is not as easily accomplished. Jim, therefore, remains captive to others despite the fact that he has, indeed, been freed.
It is important to remember that Huck Finn was written in the 20 years following the Civil War, and the entire novel reflects Twain's own post-Civil War observations. Although the Union made some attempt at Southern reconstruction, the South quickly fell into a squalid and segregated ruin. Conditions for newly freed slaves were no doubt improved, but the longed-for freedom had not come with changed perceptions, acceptance, or equality.
dog-fennel any of several weeds or wildflowers of the composite family, having daisylike flower heads.
scutcheon escutcheon a shield or shield-shaped surface on which a coat of arms is displayed.
juice harp jew's harp, a small musical instrument consisting of a lyre-shaped metal frame held between the teeth and played by plucking a projecting bent piece with the finger.
mullen stalks stalks of the mullein, a tall plant of the figwort family, with spikes of yellow, lavender, or white flowers.