13U.] Dr, ChladnPs Euphon.—Ilemedijfor the Tooth-Ache, Si 9 
patient immediately, nevertheless torment 
him tlirough life. Prometheus was re¬ 
presented as having a vulture gnawitig Ins 
liver, which was continually reproduced ; 
in other words, he was never consumeti 
by the disorder. The curious reader 
may likewise find interesting particulars 
relating to this subject, by referring to 
the words for livcy^ metancholtj madness, 
&c. in the Dictionaries of various Asiatic 
languages. IT 
Sepf. 19, 1811. 
To the Editor of the Monthly Magazine. 
SIR, 
T he musical instrument called the 
FjUphon, inventetl hy Doctor 
Cliladni, consists externally of. small 
glass cylinders, which are.“ rubbed longi- , 
ludinally witli the fingers,previously 
moistened with water. Tiiese cylinders, 
which are of the thickness of a goose- 
quill, are ail equal in length, ‘*and the 
ciilference of the squads is produced by 
the interior mechanism.” This short de¬ 
scription by the inventor, gave rise to the 
conjecture that the soundinL’' parts of his 
clavi-cylinder also vibrate longitudinally 
(.Montiiiy Mag. xxxii. 107.); that conjec¬ 
ture, how'ever, will not be thought very 
probable, on considering the compass 
and the dimensions of the instrument, 
am! that the vihraiions. of straight rods or 
tubes produce sounds which are ex¬ 
tremely acute. The clavi-cylinder is 
stated to be 8 decimetres in lencrth, or 
nearly SPo English,inches; in width 
about 19*7 inches; and in depth very 
nearly 7 inches and 1 tenth. In form it 
is said to r«^embl;e,the piano-forte. Its 
compass is four octaves and a half, ex¬ 
tending from the lowest C to the highest 
F of the harpsichord. Parallel to the 
clavier, a glass cylinder, equal to it in 
length, is placed between the inner ex¬ 
tremities of the keys and the back of the 
instrument. This cylinder is turned 
round by means of a treadle acting on a 
leaded v^ heel. By depressing the finger- 
keys the sonorous parts are brought in 
contact with this revolving cylinder, 
which is frequently wetted during per¬ 
formance. I give this description from 
the reports of tlie French Institute and 
of the Imperial Conservatory .of Myisic, 
Its tone resembles that of the harmonica, 
But what distinguishes and essentially 
characterizes the clavi-cylinder, is the 
valuable property whicli it possesses of 
giving a fine swell.By varying the 
pressure on the keys, the sounds may be 
increased or diminished at pleasure, by 
the most imperceptible gradations. In 
particular it possesses this (juality in an 
eminent degree, from the medium of in¬ 
tensity to the smorzando. The limits be¬ 
tween tliat medium and the maximum' 
riuforzando are not very extensive, be¬ 
cause the sounds of the instrument liave 
but little force, and that if we would 
preserve the beauty of the tone (t'lmhre) 
in ail its purity, tiie kevs must not be too 
forcibly pressed.” 1303. U. M. 
Cirencester, Sept. 1811. 
i^c. originate jr> a depressed action of the 
brain, sympathising with the liver, hurt by 
spirituous and fermented liquors, 
Mo.ntiily Mao, No. 219s 
To the Editor of the Monthly Magaziner. 
SIR, 
T O the remedies publishe.I in your 
Magazine for that distressing pain 
the tooth-ach, the following may be 
added, if you think proper. After endu¬ 
ring the tootb-ach myself for more than 
a year, and after the failure of a great 
variety of prescriptions, strongly recom¬ 
mended and duly tried, an infusion of 
dock-roots perfectly removed the pain, 
so as never since to return, and pre¬ 
vented the teeth fiom any farther decay, 
I believe the kind of dock is very com¬ 
mon. It has a long root, which appears 
yellow where it is broken off. Its leaves 
are long and narrow, and greener than 
the leaves of some other kinds. Tii« 
roots should be washed clean and bruised 
with a hammer, after which, boiling wa¬ 
ter should be poured upon them in a 
basin, till they are covered. Infusions, 
thus prepared, were taken according to 
tllb directions given me, in the following 
terms; “Drink" a tea-enpful of this for 
three mornings together, then every other- 
morning for a week or nine days; leave 
off taking it for nine days; then begin 
again and proceed in the’same manner.”^ 
Charles Merrick, 
Oakkp Park. 
N. B. In the Medical Pocket-book the follow¬ 
ing treatment is recommended; “If hollow 
or decayed, apply compound tincture of ben- 
jirrm, or some essential oil, on cotton to the 
part 5 or pills with camphor and opium; or 
chew the roots of pellitor'y of Spain. Some 
burn the nerve with vitriolic or nitrous acid, 
or a hot iron, or touch the antibelix with the 
letter,” &c.-—D r. Elliot. 
-—de donner des sons files FhVr 
un sort) in music, implies the conduct cf the 
voice in singing, in such a manner as to be 
"able to prolong, swell, or run rapid divisions 
of many bars without taking breath.”.—D r. 
BwRiTty. 
2 3 To 
