“1802.] 
Fourcroy and Deveaux 5 
fupported by their authority, he can now 
recommend, efpecially for the ule of hof- 
pitals, his“procefs of vefinous-white-wath- 
ing (fubfitating, however, lime for Spanthh 
white), as the molt efficatious: antl. ce- 
conomical means, ‘to dettroy and ‘to 
prevent the mephitifation of, wails; tne 
introdugtion of it, he adds, will procure 
him. the {weet fatisfa€tion of having de- 
ferved well of humanity and of domeitie 
ceconomy. 
Fourcroy, VauUQueELIN, and Tre- 
Nagp, being engaged in making Galva- 
nic experiments, have been rewarded by 
the difcovery of ore of the moft important 
and remarkable facts relating to that phe- 
yonrenton, Though it is known, that by 
multiplying the plates of Volta’s column, 
the futce of the frokes as well as the 
quicknefs of the decompofition. of water 
is confiderably increafed, yet it remained 
to be examined, what effet: might be pro- 
duced by incresfing the furface of the 
late. ‘Lo this end the above chemitts 
conftruéted a column of plates, the fur- 
face. of each of which was ‘one fyuare 
foot: the’ ftrokes as well as tht decompo- 
fition of water were the fame as from an 
equal, number of fmaller plates, but the 
combuition of metallic wires proceeded 
jmmediately with great yiolence, particu- 
larly in oxygen-gas,which phenomencn'was 
not produced by anumber of mailer plates. 
Mr. BLiFENER of Berlia; mufician to 
the King of Pruffia, has difcovered a cer- 
tain cypher applicable as notés in mufic, 
which though in itfelf very Ample, -eafy 
and plain,-is unintelligible to all who are 
not acquainted with the fecret. It confifts 
- of a mufical alphabet of five figures, which 
may be learned in half an hour even by 
_thofe who do not underftand mufic, and 
with the aflittance of which a-perfon may 
learn to play mechanically on any infro- 
ment, in the fhort {pace of fivehours. By 
means of the fame cypher, perfong: are 
likewife enabled to exprefs words or ideas 
in any language, todo which we now make 
ufe of the 24 letters. “The inventor offers 
to communicate his fecret by letters to all, 
who. with to inftruétthemfelves, for-a re- 
ward. of one Louis-d’or,under the condition 
that it is not pabdlifed again. 
Itis known, that wood, on being burnt, 
yields one-fixth of its weight of coaland five- 
fixths of fmoke, containing a conliderable 
proportion of inflammable air, which is 
commonly wafted without ule. “For em- 
loying it to the purpofe of heating and 
iinminating the rcom at the fame time, an. 
apparatus has been difcovered by Citizen 
LreBON, enginsex of bridges and roads, 
Liverary and Philofophical Intelligence. 
and: that; ” 
OS 
which he calls thermolamp, confifting of a 
box or veffel, tu which the double advan- 
tage of heating and iiluminating is unit. 
ed.. - The /moke rifing out of it, treed fiom 
all vapours and foot; may be condu&ed 
through «the, fmalleft tubes, which may 
eafily be concealed in the platter of the 
walls or ceiling, . They may be made of 
oiled filk, bue the orifice mult confit of 
xeial to prevent the burning of tthe filk 
when the air takes fire at the contact with 
the atmolpherical air.. By this apparatus 
chimneys become quite needlels, as the 
flame may be conduéted in’ a moment 
from one apartment to another, without 
leaving either foot, afhes, or coals. . The’ 
fire thus produced wants no particular care 
to be kept up, and has befides the advantage 
that its purelight may be formed into flow- 
ers, feftocns, &c. or it may be made to 
emit its light from above in the purefé 
brightnefs. The author of this curious 
diicovery, who announced it to the Natio- 
nal Inftitute in the year 7, is preparing 
for publication a full account of its nature 
and compofition. . 
The King of Pruffia has allotted a.ge- 
neral fund for the ichools of the arts. 
From this fund the falaries of the teachers 
inthe provincial {chools are to be paid, 
and all neceflary drawings, bufts and mo- 
dels purchafed. In feveral cities of the 
Pruffian monarchy, as for inftance, in 
Prankfort on the Oder, and in deveral 
towns of South-Pruflia, tchools of the 
arts are to be erected, after the plan of 
that mftituted at. Magdeburg, in 1798. 
In this latter there are two teachers with 
falaries, Profeffor Breysic and the 
painter Fussue. The Condutter, Cos- 
TENOBLE, inftructs the pupils in archi- 
tecture and geometrical drawing. The 
theoretical part of drawing and perfpective 
is taught by Profeflor Braysrcin, an ex- 
traordinary lecture. Three atternoons and 
one forenoon every week are befides allot- 
ted to giving inftruction. 
The art of bleaching has derived con- 
fiderable improvements frony modern che- 
miftry, a great fhare of which is due to 
Citizen CHAPrAL, now ‘Minifter of the 
Interior in the French, Republic.. A 
bieaching manufactory has lately betn efta- 
blithed at Pafly, by Citizen Bawens, 
under the direction of Chaptal, where, ona 
vifit of the Chief Conful, about 2000 yards 
of cotton cloth were bleached by one fim- 
pleoperation. Preparations are now made 
for bleaching linen in the fame way: Ie 
was BERTHOLLET who firft employed the 
oxygenated murtatic acid in 
bleaching 
cloth, but afterwards the acid was com- - 
bined with fixed alkalis, and earths and 
an - 
