1797: ] 
Literary and Philofophical Nowe. 384 
dies. If the fmalleft particle of any odo- was a fpecies of green garnet, and not the 
riferous liquid or oil be dropped upon 
the furface of the water, the motion ceafes 
inftantly. If drops of water are taken out 
of a glafs, by an inftrument of wax, and 
put into another glafs, where the cam- 
phor is in aétual motion, at the soth 
or 6oth drop, the motion will be obferved 
toceafe. This is not the cafe, if a piece 
of metal is made ‘ufe of inftead of wax, 
If the piece of camphor be put into the 
water from which the drops were taken, 
by means of the wax inftrument, the mo- 
tion is the fame as ordinary : after a few- 
moments the motion ceafes of its own ac- 
cord. The camphor diffolves fooner 
upon the furface of the water, than in 
damp air; it acquires a round form, and 
becomes tranfparent. If a cylindrical 
piece of camphor is put in water, and one 
of the ends loaded to immerfe it half 
under the water, it corrodes a little above 
the furface, till it divides itfelf into two 
pieces. All odoriferous bodies appear to 
be capable of producing the fame cifeéts, 
with more or lefs.energy, according to 
their inherent degree of fragrance. ‘This, 
rule, however, is not without exception. 
The cerumen of the ears, and the fat of 
birds, though endued with very little 
odour, produce very ftrong effects. Thefe 
elfeéts citizen PREVOST attributes to an 
elaftic fluid, which emanates rapidly from ° 
all odorifereus bodies, and with fufficient 
force to repel, for a time, the circnmam- 
bient liquid. The emanation of this 
fluid appears to be affiited by the point of 
contaét of the air and water. Accord- 
ingly, if, inftead of air, any other fluid, as 
for inftance, vapour, or a fragrant atmo- 
fphere, be floating on the furface of the 
water, the elaftic fluid of the odoriferous 
body emanates more gradually, and no 
motion of the odoriferous body is per- 
ceptible. 
Co_Let DescosrTitLs has communi- 
cated to the Philomathical Society, in Paris, 
the refult of an analyfis of the /lawrelite 
From his.experiments, it appears, that 
this mineral is compofed of the follow- 
ing proportions: Silex 48. Allum, 
40. Black oxyde of iron, 9.5. Oxyde 
of manganefe 0,5. Calx, 1. 
__ LAMETHERIE, in his edition of 
BerGMan, has given an analyfis of the 
garnet, which, from its cryftalline 
form, appears to be the fame with the 
SJiauroljte. The refult of this analyfis, 
which was made by WieGLeB, differs: 
effentially from the report of CoLLeT’ 
Descostits. It feems probable, that 
the fubje€&t of WiEGLER’s experiment, 
MonTHa_ty Mac. XXV, 3 
‘lowing proportions: Silex, 56. 
real pranatus. is analyfis gives the fol- 
Calx, 
30. Iron, 20. 
The celebrated German writer, W1E- 
LAND, has turned his attention to agri- 
culture. He has purchafed an eftate in 
the neighbourhood of Weimar, where his 
time is alternately devoted to rural oc- 
cup2tions and literary purfuits. 
SCHWEIGAEUsER, profeflor of Greek 
and Oriental literature, at Strafpurg, 1s 
preparing for the prefs a pocket edition 
of Polybius, to be publithed at Leipzig. 
M. Dents, the principal infpector of 
the Imperial library, at Vienna, has lately 
publifhed a fecond edition of his B:diz0- 
graphy, or Introduftion to the Knowledge of 
Books (Einleitung in die Buecherkunde). 
- This. Edition has received confiderable 
improvéments, and is fpoken of ,as a 
clatfical work, whichno {chelar ought to 
be unacquainted with. 
The {chool of the orphan-houfe at 
Brunfwick, has for upwards of a year, 
been attended by feveral Jewish children. 
M. GiesekE, a man of great merit, de- 
votes thofe hours in which the principles 
of the chriftian religion are expounded to 
the reft of the fcholars, to the benefit of 
his Jewith pupils, with whom he reads 
interefting works on literary and fcienti- 
fic fubjcéts. ‘To prevent as much as pof- 
fible, all invidious diftinétions, thefe lec. 
tures are attended by feveral of the chil- 
dren of the moft refpeétable ecelefiaftics 
and citizens. | 
A fociety of young phyficians has been 
formed at Halle, in Saxony, underthe di- 
rection of profeflor SPRENGEL. The 
objec of this fociety is, to feleét and mu- 
tually communicate to each: other, prac- 
tical obfervations. on the art of phyfic. 
Jn honor of the great SYDENHAM, it has 
adopted the name of Societas. Sydenba- 
muanaalenfis. The fociety is compofed of 
15 active members, and 40° honorary 
members, confifling of the molt celebrated 
phy ficians. 
V oss, 2h eminent bookfeller in Berlin, 
has announced a complere edition of the 
pofthumous works of Dinero, to which 
will be prefixed, a portrait of the author, 
with an account of his life and writ~ 
ings. _ 
The celebrated HEpwie, of Leipzig, 
has juli publifhed.a fecond. edition, with 
confiderable augmentations, of his excel. 
lent botanical work, entitled : Theoria ge~ 
nevationistet frudtificationis plantarumCrypio~ 
Lamicarum, ‘ : 
The Teylerian fociety at Haarlem, has’ 
3 E- prapofed 


