A plaster mold of the head of William Burke after his public execution in 1829 for the "anatomy murders." Burke was named by his accomplices as the head of the body-snatching, black-market trade that supplied the Edinburgh's medical school with…
This passage was cited by the Oxford English Dictionary as being related to "passion" as "a count noun: any strong, controlling, or overpowering emotion, as desire, hate, fear, etc.; an intense feeling or impulse."