  The intuitive notion of the Gromov invariant for maps from a Riemann surface
to a Grassmannian is shown to agree with the definition in \cite{BDW}. Also, an
induction on the genus is proved, which extends the results of \cite{BDW} to a
computation of all Gromov invariants associated to G(2,k). This is shown to
agree with the conjectured formula of Vafa and Intriligator.
