  A geometric construction of Getzler's cohomological relation in the moduli
space of 4 pointed elliptic curves is given by a push-forward of a natural
rational equivalence in a space of admissible covers. In particular, Getzler's
relation is shown to be a rational equivalence. The recursion for the elliptic
Gromov-Witten invariants of P^2 predicted by Eguchi, Hori, and Xiong from the
Virasoro conjecture is proven via Getzler's equation and the WDVV-equations.
