Plot Summary
Chapter 77 of Moby-Dick opens with Ishmael announcing "the Baling of the Case," but pausing to explain the internal anatomy of the sperm whale's head. describes the head as a solid oblong that can be divided into two quoins (wedge-shaped sections): the lower quoin comprises the bony cranium and jaws, while the upper quoin is an unctuous, boneless mass that forms the whale's broad, vertical forehead. A thick tendinous wall subdivides this upper section horizontally into two nearly equal halves—the lower half called the junk and the upper half called the Case.
The Anatomy of the Case and the Junk
The junk is described as "one immense honeycomb of oil," formed by crossing and recrossing tough elastic white fibres that create ten thousand infiltrated cells throughout its extent. The Case, however, is the chapter's true subject. Ishmael compares it to the Great Heidelburgh Tun, the famous enormous wine cask housed in Heidelberg Castle in Germany. Just as that celebrated tierce was mystically carved in front and filled with the finest Rhenish wines, the whale's Case contains the most precious of all its oily vintages: pure, limpid, odoriferous spermaceti. This substance is found in its absolutely pure state nowhere else in the creature. In life it remains perfectly fluid, but upon exposure to air after death it concretes, sending forth "beautiful crystalline shoots" like the first thin ice forming in water.
Scale and Value
Ishmael emphasizes the enormous scale of this natural reservoir. A large whale's Case generally yields about five hundred gallons of sperm, though considerable quantities are lost through spillage and leakage during the difficult process of extraction. The Case spans the entire top of the head, and since the head itself comprises one third of the whale's total body length, a tun hoisted alongside the ship extends more than twenty-six feet in depth. The inner lining of the Case is compared to a "silken pearl-colored membrane, like the lining of a fine pelisse," which Ishmael insists surpasses whatever costly material lined the original Heidelburgh Tun.
Themes and Significance
The chapter serves a dual purpose in the novel's structure. On a practical level, it prepares the reader for the next chapter's dangerous tapping operation by establishing the anatomy and value of the spermaceti reservoir. Thematically, Melville continues his sustained exploration of the whale as an object of both scientific inquiry and aesthetic wonder. The extended comparison between the whale's Case and a European cultural artifact—the Heidelburgh Tun—elevates the whale from mere commodity to a figure of grandeur and mystery. The closing line, promising "that marvellous and—in this particular instance—almost fatal operation," creates suspense while reminding the reader that this anatomical knowledge carries real, life-threatening stakes for the whalers aboard the Pequod.