  The anthropologist Claude LeviStrauss has formulated a theory of the
structure of myths using a formalism borrowed from mathematics, which has been
difficult to interpret, and is somewhat controversial. Nevertheless,
LeviStrauss's old school chum Andre Weil took his work seriously, and in this
note I propose an interpretation of LeviStrauss's `canonical formula' in terms
of an anti-automorphism of the quaternion group of order eight.
