46. A manifest distinction exists between the burden of proof and the burden of going forward with the evidence. Generally, the burden of proof upon any affirmative proposition necessary to be established as the foundation of an issue does not shift, but the burden of evidence or the burden of explanation may shift from one side to the other according to the testimony. Thus, if the prosecution has offered evidence which if believed by the court would convince them of the accused's guilt beyond a reasonable doubt, the accused is in a position where he should go forward with counter-vailing evidence if he has such evidence. When facts are peculiarly within the knowledge of the accused, the burden is on him to present evidence of such facts, whether the proposition is an affirmative or negative one. He is not required to do so even though a prima facie case has been established, for the court must still find that he is guilty beyond a reasonable doubt before it can convict. However, the accused's failure to present evidence on his behalf may be regarded by the court as confirming the conclusion indicated by the evidence presented by the prosecution or as confirming presumptions which might have been rebutted. Although not legally required to produce evidence on his own behalf, the accused may therefore as a practical matter find it essential to go forward with proof. This does not alter the burden of proof resting upon the prosecution (Wharton's Criminal Evidence, 12th Edn. 1955, Vol. 1, Ch. 2 p. 37 and foil). Leland v. State reported in 343 U.S. 790=96 L.Ed. 1302, Raffel v. U.S. reported in 271 U.S. 294=70 L.Ed. 1054.
