seem that such objects do not have an exactly scale invariant distribution in space–time, so that the number of larger radius objects is somewhat greater than would be expected were this the case. Now it is known that an isolated instanton (even with quantum fluctuations) is associated with a monopole cluster within its core (see [@hart96; @inst99] and references therein) and that the scale invariant semiclassical density of instantons acquires corrections due to quantum fluctuations. These corrections are, however, very large; in SU(2) the spectrum of small instantons (where perturbation theory is reliable) goes as $N(\rho) d\rho \propto
d\rho/\rho \times \rho^{10/3}$, where $\rho$ is the core size. The scale breaking we have observed for monopole clusters is negligible in comparison. Thus we cannot identify the ‘4–balls’ with instantons. Indeed, the fact that the monopole spectrum is so close to being scale invariant strongly suggests that these secondary clusters have no physical significance. In the next section we shall show explicitly that, in the large volume limit, they do not play any part in the long range confining physics.

Breakdown of ‘monopole dominance’?
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We finish this section by asking if there are hints from our cluster analysis that ‘monopole dominance’ 