1803.] 
fhould continve to be animated with the 
fame fpirit that pervades the fir fix num- 
bers, it will prove a valuable acquifition 
to the reading public. 
Among the [tones on the fea-beach, near 
Boulogne, a particular kind is collected, 
which, when calcined, and pounded like 
platter, forms a very hard cement with 
water. This fubftance has been uled for 
economical purpofes, and is found to pof- 
fefs the valuable qualities of refilting wa- 
ter, and becoming much harder under that 
fluid than in air. It has been analyfed, 
and its component parts are, 
Lime ~ 4.03 
Carbonic acid 330 
Oxide of iron 113 
Silica ~ 99 
Adumine . 4-4. 
989 
Eofls 1: - 1 
1000 
Citizen Guyton thinks it will prove 
very ufetul in the fabrication of various 
articles of pottery. 
A new method has been difcovered, by 
M. BRUGNATELLI, of expeditioufly ob- 
taining nitric-ether, by diftillation, without 
external heat: it is thus procured :-— 
Into a tubulated retort is introduced ene 
ounce of fugar, and two ounces of pure 
alcohol are poured upon it, To the retort 
is adapted a capacious receiver, envelop- 
ed with a cloth, dipped in cold water, 
and the joinings are fecured with a fingle 
flip of paper. Upon this matter, three 
ounces of highly-concentrated and fmok- 
ing nitric-acid are poured through the 
tube of the retort. An effervefcence in- 
ftantly takes place, the mafs becomes 
heated, the fugar is diffolved, ebullicion 
enfues, and the alcohol is etherifed, and 
pafles from the retort to the receiver. 
Thu:, ina little time, all the alcohol, 
converted into excellent ether, of a Jight- 
orange colour, and a very agreeable {mell, 
may be colleéted in the receiver. After 
the formation of the ether, a {mall quan- 
tity of nitrous gas is difengaged in the 
operation, wiich may be dilcovered by a 
red vapour. At this moment the receiver 
fhould be changed. The refidue of the 
fugar may be readily converted into oxalic 
acid, by treating it with a frefh quantity 
of nitric acid. 
The fame chemift has fucceeded in 
turning oil, in an almoft rancid ftate, into 
wax. To two parts of oil, pour one ‘of 
alcohol, and then another part of nitric 
acid, The alcohol was converted into 
MontaLy Mac, No. 97. 
Literary and Philofphical Intelligence. 65 
ether. The oil, after growing cold, and 
ftanding undifturbed twelve hours, was 
found changed into a yellowith- white fub- 
ftance, coagulated in a fingle mafs, infipid, 
without fimell, and of the nature of wax. 
M. Caenevix has analyfed the hu- 
mours of the eye, making his experiments 
chiefly upon the eyes of fheep, and he con- 
fiders the aqueous and vitreous humours 
as compofed of water, albumen, gelatine, 
and muriate of foda: the chryftalline con- 
tains no muriate of foda. 
In the Annales des Artes, &c. is the 
following receipt for making a milk- 
white paint :—Skim-milk two quarts, 
freth flaked lime eight ounces, linfeed 
oil fix ounces, white Burgundy pitch two 
ounces, Spanifh white three pounds. The 
lime is to be flaked in water, expefed to 
' the air, mixed in about one-fourth of the 
milk, the oil in which the pitch is previ- 
oufly diffolyed, to be added, a little at a 
time, then the reft of the milk, and after- 
wards the Spanith white. This quantity 
is fufficient for twenty-feven fquare yards, 
two coats, and the expence not more than 
ten pence... 
Citizen SaGe has analyfed an ore of 
Uranium, and finds that 100 parts con- 
tain feventy-eight of uranium, twenty of 
iron, and two of fulphur. 
It has been found byDr.Naucue,atParis, 
that a perfon perfectly blind may be made to 
perceive very lively and numerous flathes 
of light, by bringing one extremity of the 
voltaic pile into communication with the 
hand or foot, and the other with the. face, 
fkin of the head, and even the neck. 
That reiterated applications of Galvanifm, 
when they comprehend the half trunk, 
produce in the perfon fubjected to them 
«eat agitation, many reveries, ‘invo- 
juntary tears, increafed fecretion of the 
faliva, an acid or alkaline tafte, a preat 
fecretion of the urine, and increafe of heat 
and tran{piration, and of perfpiration in 
the Galvanifed parts. That the action of 
the Galvanic fluid may be increafed by 
drawing it off by a fharp point. 
A French-and- Arabic Lexicon, in fmall 
folio, for the ufe of thofe who vifit the 
Levant for commercial pupofes, will fhort~ 
ly be publithed at Paris. It is compiled 
by a pupil of Srlvefter de Sacy, who re- 
vifed and correéted it, and printed in the 
Imprimerie de la -République.—A {econd 
volume is to follow, containing the Ara- 
bic-and-French part. 
Journey to Mont Blanc—M. Forne-. 
RET, of Laufanne, and the Baron pe 
DorRTHEREN, have undertaken a new 
Journey to Mont Blanc. After two 
day’s travel, they arrived at the fummit, 
when 
