This book was made because of some changes in the legal field. An Oregon statute requires an accused to prove his defense of insanity beyond a reasonable doubt, a familiar concept in an unfamiliar setting. The Supreme Court enunciates the McNabb doctrine for the admission of confessions in the federal courts. The Federal Rules of Criminal Procedure are promulgated. The American Law
Institute recommends that adultery no longer be a criminal offense. The Court of Appeals for the District of Columbia discards the time-honored right-and-wrong and irresistible impulse tests for insanity. About two-thirds of the present work relates to the law of criminal evidence in general; about one-third relates to evidence in connection with specific crimes. New chapters have been added on scientific detection devices, self-incrimination, and tax fraud cases, and the text and footnotes of the other chapters have been brought up to date.
