Abstract
The first difficulty one meets with in deciding these points is in knowing exactly what is meant by mania. Pinel's definition of mania was insanity, marked “by a strong nervous excitement” of the mind and body, “accompanied by lesions of one or more of the functions of the understanding.” Melancholia was distinguished from it, by there being “no propensity to acts of violence,” and by the insanity being “exclusively upon one subject.”

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