We discuss the inverse problem of determining the anisotropic
conductivity of a body described by a compact, orientable, Riemannian manifold M
with boundary @M, when measurements of electric voltages and currents are taken
on all of @M. Specifically we consider a one parameter family of conductivity tensors,
extending results obtained in [3] where the simpler Euclidean case is considered. Our
problem is equivalent to the geometric one of determining a Riemannian metric in
monotone one parameter family of metrics from its Dirichlet to Neumann map on @M.