ered.

M. M. The art of curing this defect is to cause the stammerer to repeat the
word, which he finds difficult to speak, eight or ten times without the
initial letter, in a strong voice, or with an aspirate before it, as
arable, or harable; and at length to speak it very softly with the initial
letter p, parable. This should be practised for weeks or months upon every
word, which the stammerer hesitates in pronouncing. To this should be added
much commerce with mankind, in order to acquire a carelessness about the
opinions of others.

2. _Chorea St. Viti._ In the St. Vitus's dance the patient can at any time
lie still in bed, which shews the motions not to be convulsive; and he can
at different times voluntarily exert every muscle of his body; which
evinces, that they are not paralytic. In this disease the principal muscle
in any designed motion obeys the will; but those muscles, whose motions
were associated with the principal one, do not act; as their association is
dissevered, and thus the arm or leg is drawn outward, or inward, or
backward, instead of upward or forward, with various gesticulations exactly
resembling the impediment of speech.

This disease is frequently left after the itch has been too hastily cured.
See Convulsio dolorifica, Class III. 1. 1. 6. A girl about eighteen, after
wearing a mercurial girdle to cure the itch, acquired the Chorea St. Viti
in so universal a manner, that her speech became affected as well as her
limbs; and there was evidently a disunion of the common trains of ideas; as
the itch was still among the younger children of the family, she was
advised to take her sister as a bedfellow, and thus received the itch
again; and the dance of St. Vitus gradually ceased. See Class II. 1. 5. 6.

M. M. Give the patient the itch again. Calomel a grain every night, or
sublimate a quarter of a grain twice a day for a fortnight. Steel. Bark.
Warm-bath. Cold-bath. Opium. Venesection once at the beginning of the
disease. Electricity. Perpetual slow and repeated efforts to move each limb
in the designed direction, as in the titubatio linguae above described.

3. _Risus._ Laughter is a perpetual interruption of voluntary exertion by
the interposition of pleasurable sensation; which not being checked by any
important consequences rises into pain, and requires to be relieved or
moderated by the frequent repetition of voluntary exertion. See Sect.
XXXIV. 1. 4. and Class III. 1. 1. 4. and IV. 1. 3.