1807.) 
and great lakes which he thinks mutt 
there exift. He has, in a memoir pre- 
fented to the National Inttitute, mdicat- 
ed the courfes which appear to lim to 
be proper for the moit {peedily exploring 
thefe countries which till remain to be 
-difcovered. 
Counr Rumrorp (now at Paris) has 
afcertained that licht lofes little of its 
intenfity by patling through ground glafs ; 
he recommends, therefore, the prefer- 
ence of ground glaffes for Argand’s lamp, 
asa means of preventing the glare, fo 
offenfive to the eye. 
Bourton La Grance has examined 
with great attention tannin, the cha- 
racter of which is to form an infoluble 
compound with gelatine; and he has 
found that it has an affinity for the alka- 
lies, the earths, and the metallie oxides, 
and the faculty of becoming converted 
into gallic acid by abforbing oxygen. 
M. Bucuouz has, from various expe- 
riments upon the feeds of lycopodium, | 
found, 1, that they contain a fixteenth 
part of a fat oil of brownih yellow, and 
foluble in alcohol; 2, a portion of real 
fucar; 3, a vifcous extract of a brownifh 
yellow, and am infipid tafte; 4, the refi- 
due, after being treated with alcohol and 
water, may be regarded as a peculiar 
product of the vegetable kingdom ; 5, 
the yellowith afpeét of the feed in_ this 
latter {tate, indicates the union of a fpe- 
cies of pigment with the firft principle 
of the feed, or, at leaft, a very intimate ' 
union of the conftituent. parts of this 
feed ; 6, the oily part which enters into 
the compolition of this feed oceafions its 
lively combuftion, and its conftant fepa- 
ration from water. 
M. Freyurno has extracted a large 
quantity of faccharine matter from the 
black mulberry-tree, which may be ob- 
tained in a -ftate of fyrup or concrete 
fugar. The fyrup may be had by extract- 
ing-the juice, clarifying it with the whites 
of egos, and afterwards evaporating it 
to a proper coniiitence. 
M. Goco has obtained from the com- 
mon hazel-nut a fweet and agreeable oik 
M. pr Beavvors has begun to publifh 
an account of the infeéts which he col- 
leéted on the African and American 
coatts. . 
Italy. 
Dr. Gauttiert, phytician at Angogna, 
in the Milanefe, has publifhed a Trea- 
tife on the Animal Gelatine as a Cure 
for Intermittents. The National Infti- 
tute have delegated a committee to in- 
auire into the ettcéta of this new remedy, 
Monxiury Mac, No, 133. 
Literary and Philosophical Intelligence, 
‘fectual. 
23 
and they found that, the common glve 
of the joimers cured intermittents. A 
great many [talian phyficians have tried, 
this remedy, and found it fate aud ef 
They tried it in the febris ters 
tiana duplicata, fome alfo in the quazian, 
which had not yielded to bark, &c. like- 
wile in the quotidian remitteuts, Seye- 
rai patieuts were reftored even by the 
fimple jely of beet. ‘They obferved 
that the fthenical intermittents cured by 
the glue went over into a febris continua, 
and even in afthenical ones; but this 
continuity lafted at moit only one or two 
days. The glue is to be given a fhort 
tune before the paroxyfn. Its princi- 
pai effect coniifts in taking away the 
atony of the ftomach and the ‘kin. 
When that is done, it’is adviiable to 
give fome dofes at feveral other hours 
of the day. It ought not to be diluted 
too much with water. When the folu- 
tion, made from eleven or twelve drachms 
of glue in two ounces of water, coagu~ 
lates and thickens again, it may eafily 
be made potable, by putting the glafs 
on hot afhes.* Others gave the dofes 
every quarter, or every half hour, with 
equally good effect. The patient fhould 
not drink much after having taken the 
medicine, and efnecially no acid bever- 
age. ‘I'wo or three hours after he may 
drink or eat. The glue operates at the 
fame time as a fudorific. The patient 
ought to remain two days in bed after 
the fever has ceafed, and to avoid the 
air (efpecially if it be cold and moiit) 
for four or five days. At Berlin thefe 
cures, have been reiterated in the Cha 
rité, and found of indubitable effect. 
Dr. De Sacco, at Milan, has made 
experiments, which prove that the lymph 
of the malanders, or rather the vreafe 
of horfes (Italian Giardoni, German 
Mauke, French Eauw aux jaumbes), has 
the fame effect, when inoculated, as the 
vaccine virus. Uhefe experiments have 
been repeated feveral times at Berlin, 
by Dr. and Counfellor Bremer, who got 
re-produced lymph from Vienna. He 
tranfplanted the lymph by four genera- 
tions, and it remained eftective. All 
neceflary means have been employed 
to afcertain that true cow-pock was’ pro- 
duced. Every child inoculated with this 
matter was re-inoculated with the na- 
tural fmall-pox, but did not take it. 
* Gluten, prepared in a Papinian digeftor, 
from frefh bones, beef, &c. would produce 
the fame effe&t, be equally cheap, and with- 
out the naufeous tafte of the joiners’ glue. - 
Tie 
