$12 
truffles are principally met with in the 
vicinity of oak and chesnut-trees, and 
even found this highly-esteemed species 
in soil formed entirely of the fragments of. 
those. astringent vegetables, has made 
the experiment of planting potatoes in 
trenches prepared with tamand earth, dis- 
posed in alternate strata of about two 
inches each. 
up, were black, and tasted very much 
like truffles. He imagines, that in this 
manner the quality of those roots might, 
in two or three years, be so far changed 
as to givéthem the exact.taste and ap- 
- pearance of truffles. 
The following method of preserving 
grapes is given in a French journal: 
Take a cask or barrel inaccessible to the 
external air, and putinto it a layer of 
bran dried in an oven, or of ashes well 
dried-and sifted. Upon this place a layer 
of bunches of grapes well cleaned, and 
~ gathered in the afternoon of a dry day, 
before they are perfectly ripe. Proceed 
thus with alternate layers of bran and 
rapes, till the barrel is full, taking care 
that the grapes do not touch each other, 
and to let the last layer be of bran; then 
close the barrel, so that the air may not 
be able to penetrate, which is an essen- 
tial point. Grapes thus packed will 
keep nine, or even twelve months. To 
restore them to their freshness, cut the 
end of the stalk of each bunch of grapes, 
and put that of white grapes into white 
wine, and that of the black grapes into 
red wine, as. you would put flowers into 
water, to reyive or to keep them fresh. 
In order to obtain acetate of potash 
white and wel! crystallized, it iS necese 
sary to employ distilled vinegar, and very 
pure and saturated carbonate of potash, 
because if there were potash in excess, 
‘that alkali would give out charcoal and. 
colour the solution and the salt. In or- 
- der to avoid this inconvenience, and to 
make acetate of potash in an economis 
cal manner, M. Lenozir advises to dis- 
‘solve carbonate of potash in common vi- 
negar, to evaporate the liquor to dryness, 
to subject the salt to aqueous fusion, then 
to dissolve it in pure water, to filtre 
through charcoal, and to evaporate the 
jiquid gently in a silver basin. In this 
way a perfectly white salt is obtained. 
M, Parmentier, whose labours are al- 
ways directed to some useful end, has- 
made public a new method of preparing 
the extract of opium, which appears. far 
superior to all those hitherto known. It 
takes from that substance the smeil by 
Literary and Philosophicai Intelligence. 
These potatoes, when dug - 
[Oct. 15 
which it is distinguished, and which is 
always in proportion to its malignant 
qualities. The manner of preparing 24 
ounces of opium is as follows :—~Mace-_ 
‘rate in rain-water for five days: then 
boil for a quarter of an hour with two 
pounds of pulverized charcoal: strain, 
and clarify with white of egg, and, by a 
suitable evaporation, you will obtain. 
twelve ounces of extract. 
- In the Champs Elysées, near the an- 
cient Chapel of St. Bardulph, called, by 
some, the Temple of the Manes at Arles, 
have been found, among many fragments 
of large earthen urns, a smaller one of 
the same substance; two beautiful la- 
-crymatories, one 
considerable Jength; a fine sepulchral 
lamp of earth, in good preservation, 
upon which is a winged genius; @ 
priapus of bronze, turned green by 
being in contact with a bronze ring, de+ 
signed to suspend it by; a small braces 
-let for a child, in bronze, to which 1s 
fastened_a medal of the colony of Nimes, 
the impression much effaced, and almost 
illegible ; twelve glass beads upon wire, 
two of red glass joined together, one of 
white glass, and the drop of a pendant 
likewise of glass: another larger bracelet 
in bronze; a small drum; a head of 
Medusa of blue glass, thick, and jn re= 
lievo. E 
GERMANY. 
M. Hrerxxe, has invented a new 
kind of bellows, in which the current of 
‘air may be increased or diminished at 
pleasure, without interrupting its action. 
M. Bozzini has announced, in several 
~ Journals, the invention of a machine, 1n- 
tended to throw light into the interior of 
the animal body. It is composed of a 
recipient containing the light; of tubes 
which direct its rays to the cavities which 
>it is wished to enlighten; and. of re- 
flecting tubes which transmit the Jumis 
nous rays to the eye of the observer. 
RUSSIA. 
M. Kraprotn, Member of the Aca- 
demy of Sciences of Petersburg, has set 
out for Teflis, the capital of Georgia, 
with a view to proceed to Teheran, in 
Persia. He intends to spend several 
years in the latter country, in order to 
make himself thoroughly acquainted with 
If. 
‘The account of Captain Krusen- 
sTIERN’s Voyage Round the World, is 
preparing with the greatest dispatch, 
Almost all the engravings are ee 
ad 
of which is of - 
i 
Ke 
