Are by statute in some States, [94], [95].

Must be lawful to be, [95].

Necessary for physician to prescribe, [95].

Report of officer of insurance company, [96].

Defamatory statements when, [136], [137].

PROFESSIONAL EVIDENCE—

Representation by patient as to malady, [96][98].

Mem. made by physician, [98], [105].

Scientific books not admissible, [99][105].

Dying declarations when admissible, [105].