Unsound Mind
Dictionary of Terms and Phrases Used in American or English Jurisprudence · Benjamin Vaughan Abbott · 1879
Dictionary of Terms and Phrases Used in American or English Jurisprudence
According to large the scope of that proceeding to a class of persons who could not be pronounced idiots or lunatics according to old standards, yet were deemed proper objects of legal tutelage, by reason of mental incapacity. But he says the authorities do not concur in assigning any precise meaning to the term, as designating a fixed, determinable degree of impairment.
Ray Med. Jut. Ins. 6.