Final answer:
Chapter 27 of 'Huckleberry Finn' begins with dark humor through Huck's descriptions of nature tainted by man-made structures and the deceit of wood sellers, complemented by his blunt commentary.
Step-by-step explanation:
The bit of dark humor that Mark Twain begins chapter 27 of Huckleberry Finn with is found in the contrast between the natural beauty of the sunrise and the presence of man-made structures that intrude upon this scene. Twain uses vivid details to describe this moment, but also injects a sense of dark humor through Huck's observations. For example, Huck describes the wood yard and the way wood sellers cheat their customers by stacking wood loosely, allowing one to throw a dog through it 'anywheres.' Additionally, while the breeze is sometimes 'sweet to smell,' at times it's rank due to dead fish left lying around, exemplifying Huck's sense of humor amidst his descriptions of the environment. Furthermore, Huck's innocent and straightforward commentary adds a layer of dark humor, particularly when he speaks about the 'woodyard, likely' and the cheats.