  Controversy exists regarding the possible existence of a transition between
the liquid and glassy states of water. Here we use experimental measurements of
the entropy, specific heat, and enthalpy of both liquid and glassy water to
construct thermodynamically-plausible forms of the entropy in the
difficult-to-probe region between 150 K and 236 K. We assume there is no
discontinuity in the entropy of the liquid in this temperature range, and use
the Adam-Gibbs theory -- which relates configurational entropy to dynamic
behavior -- to predict that dynamic quantities such as the diffusion constant
and the viscosity pass through an inflection where the liquid behavior changes
from that of an extremely ``fragile'' liquid to that of a ``strong'' liquid.
