  We present a comprehensive picture of (non-critical) domain growth in model C
systems where a non-conserved scalar order parameter is coupled to a conserved
concentration field. For quenches into the region where the ordered and
disordered phases coexist, we confirm earlier partial numerical results and
find a growth exponent $z=3$. For quenches into the ordered region, we confirm
the theoretical prediction $z=2$. Finally we discuss the implications of our
results for domain growth in the microcanonical $\phi^4$-model and we offer
some criticism of the work of Somoza and Sagui on the morphology and wetting
properties of domains.
