464 
Count Burcuaus, direftor of the 
Economico-Political Society of Switzer- 
Jand, having procured feveral hog-fkins, 
caufed them to be prepared, fome with 
and others without the hair, and the re- 
fult of the experiment was, that he obtain- 
ed an excellent leather, efpecially for the 
ufe of fadlers and harnefs-makers. Traces, 
&c. made of this leather are much ftronger 
than thofe ufually made of horfe or cow 
Jeather. Perhaps it may anfwer equally 
well for boots and fhoes, but the Count 
has not yet made any experiments to 
prove this. Ithas been fuppoled. that pork 
deprived of its f{kin, was no longer pro- 
per to be cured; but on the contrary 
the Count afferts that bacon faked and 
fmoaked, after having been feparated 
from its fward, acquired a much finer 
flavour, as the falt and fmoak then more 
eafily penetrate it on every fide. 
GARNERIN, the aéronaut, in his fecond 
afcenfion fiom St. Peterfburg, rofe to the 
height of 1270 French toifes, and thence 
brought down at the requeft of Profeflor 
Parrot, of Dorpat, fome bottles filled 
with air, with which that learned philo. 
fopher has been making fome interefting 
experiments. ) : 
On the 16th of Auguft, Bonaparte 
opened the collection of works of art, 
which during his abfence had received the 
name of the Napeleon Mufeum, and exa- 
mined every part ofthe inftitution : whilft 
he was ftanding before the Medicean Ve- 
nus, the celebrated DeENoN, Director 
General! of the Mufeuim, prefented to him 
a medal which had been ftruck to com- 
memorate the arrival of this mafterpiece 
in Paris. On one fide cf this medal is a 
very good likenefs of the Firft Conful ; 
and on the reverfe, the Medicean Venus, 
with this infcription: ux Arts la Vic- 
70ir2. 
The language of the Wallachians is a 
rude compound of Latin, Greek, and 
Tilyrian, words, - Though it has never 
been cultivated like the modern Greek, 
there exif! feveral works written in that 
- Janguage, whence it appears that endea- 
yours. are not wanting to diffufe ufeful. 
knowledge amovg that ,uncuitivaied peo- 
ple. A conficerable: number of books, 
mofly devotional, have lately come ferth 
from the Wallachian prefles at Vienna, 
Ofen, Hermannftadt, Blazendorf, Buka- 
reft, Rimnik and Jafly :—among others 
the Old and New Teftament ; a Tranfla- 
tion o Abbe. Millot’s Univerfal Hiftary ; 
fcyeral Wallachian Grammars, &c. 
From feveral experiments made by 
‘ 
Literary and Phibfophical Intelligence, 
[D ete ¥y 
Citizen MaRGuERON to afcertain the re 
ciprocal agtion of feveral volatile oils with 
fome faline fubftancés, it appears, 1. That 
the oils of thyme, rofemary, lavender, 
fage, orange, and jemondo-not undergo 
any alteration from the prefence of folu. 
tion of the acetite of lead and of aium. 
z. That the eil of the vulnerary plants, 
roixed with a folution of marine falt, lofes 
in part its yellowifh colour, and becomes 
more white. 3. That a folution of fu- 
per-oxygenated muriate of potath pro- 
duces no change in the eflential oils of 
thyme, lavender, peppermint, lemon and 
cloves. 4. That lime water deftroys in 
part the colour of the oil of rofemary. 
5. That nitrate of mercury is decompofed 
in the oil of rofemary, to which it com. 
municates a very high colour. 6. That 
correfive fublimate and a folution thereof 
in diftiiled water, heightens the colour 
and increafes the confiftence of the oils of 
lemon, chervil, hyfop, lavender, rofemary, 
and peppermint, is partly decompofed, 
and preduces dulcified mercury. 7. That 
dulctfied mercury and cinnabar are not 
affected by the oils of lavender and 
rofemary. 8. That turbith mineral is 
partly decompofed in oil of rofemary. 
9. That a red precipitate of mercury is 
partly decompofed into a grey oxides when 
mixed with the oil of lavender, without 
hewever caufing the leaft change in that 
oil.—-ro. That the cauflice muriate of 
antimony is decompofed inthe oil-of rofe- | 
mary, which it colours and renders thick. 
Part of the muriate lofes its acid, and 
feems to be changed into argentine flowers 
of antimony. air. That the oleo-faccha- 
rum is a combination more or lefs perfeét, 
according te the quality of oils employed 
in the compofition of it. 12. Finally that 
volatile oils, when agitated in diftilled 
water, do not communicate any percepti-’ 
ble heat to the thermometer, except when 
they are adulterated with {pirit of wine. — 
Monficur DRaPARNAUD, profeflor of 
natural hiftory at Montpellier, has lately 
communicated to the Philomathical So- 
ciety of Paris, .a notice on the infect 
named Maztis Oratoria, Lin. ‘The in- 
fe&t that Fabricius, Devillers, and other 
authors, have defcribed under the name 
ot Mantis Oratoria, is, according to Cie 
tizen Draparnaud, the male of the fpe- 
cies called Relgisfa. Linneas him'elf 
appears, in toe fequel, to have ‘con 
founded thefe two fpecies, fince he has 
defcribed the fecond under the name of 
Orat:ria, ‘in the “ Mufeum Ludovice 
Ulricees” Citizen Draparnaud, who has 
Tes ‘difcovere? 
