For our purpose we read (*) as saying that the passage of current is reduced exponentially as r ij is increased; and that there is Gaussian dependence of rate on potential difference, with the maximum driving force occuring at ∆G • ij = -λ = -0.7V , below which remarkably the rate begins to slow down rather than speed up (this is the Marcus inverted region effect; see ). For this study was chosen an 11 species network whose graph is seen here: Nonzero potentials of 0.1V are assigned to sources 1, 2, and 3 at initial concentrations 0.2, 0.4, and 0.6M, respectively (other species assigned zero initial concentration). Lower potentials -0.3, -0.2, and -0.2V are assigned to 9, 10, and 11. All other species are assigned zero potential (labels omitted). All distances are 8 Å except for the four terminal branches at 15 Å.