"We frequently see one idea appear in one discipline as if it were new, when it migrated from another discipline, like a mole that had dug under a fence and popped up on the other side." Taking note of this phenomenon, John Goldsmith and Bernard Laks embark on a uniquely interdisciplinary history of the genesis of linguistics, from nineteenth-century currents of thought in the mind sciences through to the origins of structuralism and the ruptures,...