This course is an introduction to the study of how languages change over time. Topics to be covered include a review of basic phonetics and phonology, regularity of sound change, analogy, the comparative method, linguistic reconstruction, linguistic family classification, and syntactic and semantic change. Format: lecture/discussion. Requirements: participation in discussions, weekly homework, a midterm exam, and a final exam. Prerequisites: Linguistics 101 or Linguistics 111. No enrollment limit (expected: 10).