  An elementary family of local Hamiltonians $H_{\c ,\ell}, \ell = 1,2,3,
ldots$, is described for a $2-$dimensional quantum mechanical system of spin
$={1/2}$ particles. On the torus, the ground state space $G_{\circ,\ell}$ is
$(\log)$ extensively degenerate but should collapse under $\l$perturbation" to
an anyonic system with a complete mathematical description: the quantum double
of the $SO(3)-$Chern-Simons modular functor at $q= e^{2 \pi i/\ell +2}$ which
we call $DE \ell$. The Hamiltonian $H_{\circ,\ell}$ defines a
\underline{quantum} \underline{loop}\underline{gas}. We argue that for $\ell =
1$ and 2, $G_{\circ,\ell}$ is unstable and the collapse to $G_{\epsilon, \ell}
\cong DE\ell$ can occur truly by perturbation. For $\ell \geq 3$,
$G_{\circ,\ell}$ is stable and in this case finding $G_{\epsilon,\ell} \cong DE
\ell$ must require either $\epsilon > \epsilon_\ell > 0$, help from finite
system size, surface roughening (see section 3), or some other trick, hence the
initial use of quotes ${\l}\quad$". A hypothetical phase diagram is included in
the introduction.
