PARTIAL INSANITY. -MONOMANIA.
1. The characteristic of monomania is, that it exhibits itself only to a very
limited extent
2. It differs from eccentricity, chiefly, in the unconsciousness of any pecu-
liarity.
n. 1. Insane delusion is the belief of facts which no sane person could believe
3. The test of insanity often exists in the surrender of the will to imaginary
direction
4. Moral insanity is not commonly called into exercise in the testamentary act
5. Partial insanity, or monomania, is the most difficult form in that respect
6. The case of Greenwood presents a remarkable delusion. It existed only
in regard to his next of kin .
7. The case of Dew v. Clark is a leading one upon this question
n. 6. Lord Lyndhurst's commentary upon partial insanity
8. The opinion of Sir John Nicholl contains an instructive commentary
a. Violence, cruelty, or antipathy is not insanity. There must be mental
perversion on the subject of the will.
b. Where the will is the direct offspring of morbid delusion, it cannot be
upheld
c. Lord Hale's definition of partial insanity. It is exceedingly difficult
of clear definition
d. The forms and developments of madness almost infinite. Illustrations
e. The term madness very loosely applied in popular use; most persons
have seen cases
f. The difference between insane and other delusion, is, that argument
and reason avails nothing in the former, and will commonly remove
the latter
g. Dr. Battie defines it as "deluded imagination"
h. Mr. Locke seems to suppose it consists in reasoning correctly from
false premises!
i. But he includes false fancies, and partial derangement in his definition
k. Dr. Francis Willis, a great authority, and one of large experience
1. He says an unsound mind is marked by delusion, insensibility, or
perversion of feeling; and sundry other characteristics
9. The general result of all the cases is, that a will produced or colored by
insane delusion cannot be upheld
10. Lord Brougham's opinion that partial insanity produces testamentary in-
11. This does not appear to have been followed by the courts, or by writers
upon the subject