the business of the accuser to make any charge that
he may bring against the accused not merely discreditable, but as consistent as possible with the
crime for which he is arraigned. For example, if
he calls a man accused of murder a debauchee or
an adulterer, the discredit attaching to such charges
will no doubt tell against the accused, but will, on
the other hand, do less to prove the case than if
he shows him to be bold, insolent, cruel or reckless.