Burden of Proof

"The legal burden is discharged by way of evidence, with the opposing party having a corresponding duty of adducing evidence in rebuttal. This constitutes evidential burden. Therefore, while both the legal and evidential burdens initially rested upon the Appellant, the evidential burden may shift in the course of trial, depending on the evidence adduced. As the weight of evidence given by either side during the trial varies, so will the evidential burden shift to the party who would fail without further evidence”?