This paper develops a model of an unregulated banking system based around a
private clearing house arrangement. Whilst such a system may dominate one
with a public safety net in reducing moral hazard in lending and therefore
the scope for individual bank insolvency, it also increases the likelihood
of contagious bank failures following a systemic shock or an aggregate liqu
idity shortage. (C) 2000 Elsevier Science B.V. All rights reserved. JEL cla
ssification: D00; G3.