Title 24, Chapter 4, Section 22
If a party has evidence in his power and within his reach by which
he may repel a claim or charge against him but omits to produce it,
or if he has more certain and satisfactory evidence in his power but
relies on that which is of a weaker and inferior nature, a
presumption arises that the charge or claim against him is well
founded; but this presumption may be rebutted.