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powdered coke as the carbonaceous mat. 
ter to be employed, but infifts on their be- 
ing thoroughly burned, and in clofe vef- 
fels, ike the iron pots in which charcoal 
is now prepared for the gunpowder manu- 
factory, or in the way in which coals are 
coked in Lord Dundonnald’s procefs. 
As the patentee is well known as a man 
who unites {cientific knowledge with much 
practical information, it remains for others 
in the fame line of this important branch 
of manufaétures to appreciate the value of 
the invention here claimed, and the great 
. fimplification of proceffes here recom- 
mended. 
— 
Mr. ports of Belford, Northumberland, 
for am ARTIFICIAL LEG and ARM upon 
a new Conftruciion. 
THE object of this contrivance is to 
imitate more nearly the, natural ftruc- 
ture of the parts, the lofs of which it is 
intended to fupply, efpecially in the con- 
ftruStion of the joints, and it is performed 
in the following fimple and well imagin- 
ed manner. If the limb loft be tne leg, 
above the knee, the artificial one is com- 
pofed of thefe pieces: the uppermoft isa 
cafe of ftiff leather, to enclofe the ftump, 
into which is firmly fixed a wooden block, 
furnifhed with two parallel projecting fe- 
micircular brafs pieces, to form one part 
of the knee-joint. The fecond part is the 
Jeg piece,which has at the upper extremity 
afingle femicircular brafs joint to play 
within the two belonging to the thigh 
piece. This joint is exactly the fame as 
that of a number of common rulers ; the 
three femicircular parts are all held toge- 
ther by a fingle {crew pin with a nut, and 
they are cut fo that the motion of the 
joint cannot be extended farther than to 
ftraighten the leg as far as can be done in 
the natural limb. ‘The artificial leg is 
made of a fingle piece fomewhat refem- 
dling an inverted cone, but flattened at 
the fides, and brought tharper towards the 
front. The lower end of the leg is fur- 
hi 
nifhed with a brafs ball, into which the. 
point of the cone is firmly fixed. The 
foot-piece is a block fomewhat refembling 
a natural foot, (but without the toes, 
which form a feparate piece). It is fplit 
longitudinally and hollowed out with half 
a globe in each part, fo as to form an en- 
tire hollow globe when joined together, 
which receives and forms a joint for the 
‘ball, fixed cn the lower end of the leg. 
Laftly, the toes form a fingle piece, which 
are joined on to the foot at the bend of 
thefe parts in the natural foot, and the 
joint is made by alternate hollow hinges, 
which when put together receive a pin 
through the whole. The hollow leather 
of the thigh piece is to be ftuffed, and all 
the joints are to be made to play very 
eafily, and rather loofe. All the other 
parts, that is, the knee-pan, ancles, and 
all the flefh, are to be made up with ftuff- 
ing in the ufual manner. The artificial 
limb is kept to the body by aftrong ftrap 
fixed in. the hinder part of the leg-piece, 
which paffes up round the oppofite fhoul- 
der, and is faftened to any part of the 
drefs. 
From an infpection of this contrivance, 
which is not without ingenuity, it is ob- 
vious that nothing more is gained, and no 
more affiftance to the natural motion is ac- 
quired, than if the bones that compofe the 
real limb or limbs were again fet on and 
fimply kept in their proper places, by 
pins and wires, as in the prepared fke- 
leton, but without a fingle mufcle or ten« 
don to direct their motion. Therefore, 
though the natural play of the joints is 
fufficiently well imitated, and the ftuffing 
which furrounds the feveral pieces will 
prevent the feveral motions from being too 
loofe and thaking, it is not eafy to conceive 
how the wearer will by this be enabled 
to manage the artificial limb, fo as in any 
confiderable degree to imitate the compli- 
cated movements of the natural organs 
which follow each other in the moft regular 
and meafured walking. 
STATE OF PUBLIC AFFAIRS, 
In February, 18ot. 
FRANCE. . 
NTELLIGENCE was received from 
Paris on the 18th of February, that 
Peace between France and the Emperor of 
Germany was figned at Luneville, on Fe- 
bruary the 9th. The leading features of 
the treaty are, thatthe Rhine becomes the 
boundary of the French territory in Ger- 
many, and the Adige of that which is 
called the Cifalpine Repubiic. Tufcany 
is affigned to the Duke of Parma, a prince 
of the houfe of Spain. The Grand Duke 
£2 ; is 
