  We apply a theory for the transmission probability of small interacting
systems, which was formulated based on the Kubo formalism in our previous
study, to a series of quantum dots described by the N-impurity Anderson model.
In this report, we present the transmission pobability for the system of N=2
calculated using the order $U^2$ self-energy and vertex corrections.
Particularly, we examine the features in the two typical parameter regions,
$t<\Gamma$ and $t>\Gamma$, where the Kondo effect or the inter-dot correlation
dominates. Here, $t$ is the inter-dot transfer and $\Gamma$ is the level
broadening caused by the coupling with the noninteracting leads.
