486 - 
which efcapes anconfumed from the tal- 
ow, that is, about as often as common 
oil lamps require to be trimmed... 
Another advantage attending ‘thefe de- 
tached wicks, is the eafe with which thei 
bulk may be plone tioned to that of the 
candle, and to the fufibility of the rmate- 
‘yial of which it #s compofed, a point of 
much nicety in candle-makine. 
Another eed rovement brought forward 
gn this {pecification is; that ef fubjeciing 
the melted tallow or other materia! toa 
confiderable preflure, during the att of 
cooling. This is cone by means of a con- 
denfing machine, by which any degree of 
preflure may be made on‘ the furface of the 
liquid fubfiance, and by this means itad- 
qilires a greater degree : firmnets and 
folidity when cold. ap particular contri- 
vance is likewife adopted for cafting the 
hollow cylindrical, can ab $, a defcription 
ef which could not be well underftcod © 
without reference to the plate. One’ap- 
i on of this method will perhaps 
hardly be thought a very laudable im- 
provement, which is, to caft a hollow 
cylinder of wax, and All the cavity with 
tallow; whereby a candie which is more 
than half tallow wil have all the eut- 
ward appearance of a wax-candle. 
=< 
MR. EDWARD COLEMAN, jor a# ARTI- 
z FICTAL FROG. 
A PATENT was granted to Mr. Epw. 
CoLeMaN,. (Profeffor at the Veterinary 
College, Pancras we fuppofe) foran artiii- 
cial Frog, which being applied to the na- 
tural frog of horfes’ fect, will effectually 
prevent contracted hoofs, thrufhes, and 
canker. 
This frog may be made of any tough 
and hard material, fuch as wood; horn, or 
Jeather; but, in general, iron is prefer- 
able. In order to fx and remove the 
artificial frog with eafe, the tee of the 
iron frog extends under the toe of the flog, 
which prevents the frog from ilipping for- 
wards ; and to prevent its moving back- 
wards or fideways, a itcel {pring is fitted 
into an irregular groove in the iron frog, 
and fixed under the heels of the fhoe. To 
give greater fteadinefs to this: applications 
a leather ftrap paffes through a hole in the 
heel of the frog,ind buckles round the hoof. 
Obfervations.—In the whole of the art 
of farriery, there is no fubjeét of more 
importance than fhe difeafes of- the foot, 
and the methoa of fhooing the belt .cal- 
culated for the eafe and ‘fecuri ity of the 
animal.- It was formerly the cuftom al- 
moft univerfally, and is ftill fo in many‘ 
parts, to cut.away a great part of the 
New Patents lately enrolled. 
crown of the hoof, the frog, and bars; and 
to apply a very thick heavy fhoe in. pe: 
to render the hoof broader and handfomer, 
and the tread of the horfe more fecure, - 
But the contrary effec produced by this 
injudicious method, has been fully pointed 
out by Crark of Edinburgh, Conk ae 
and others: for, by eating away the frog, 
which is the natural fuppert to the hie 
of the hoof, 
ufing high- Sonled fhoes, the whole weight 
of the ed is thrown on the anterier 
edge or crown of the hoof, which often 
thereby becom es inflamed, and forms very 
troubleforne fores, difficult to cure. The 
frog likewife being kept off the ground 
ioies its natural firmnefs of texture, efpe- 
ciaily when the animal is kept ftanding on 
Jitter in hot ftables, and becomes foft, 
weakening the bars, and 
{pongy, very prone to ulceration; and . 
thus, running thrufhes, cankers, and other 
fores of the foot, are produced, by which 
many fine hories ate irretrievably ipoiled 
for the faddie. To remedy this inconve- 
nience, and to keep a proper preflure on 
the centre of the hoof where the frog has 
been injured, the contrivance of the pa. 
tentee is offered to the public, and-cer- 
tainly it is a fubjeét that merits attention 
from all thofe who are concerned i in this. 
noble animal. ; 
—=— 
MR. EDWARD STEERS, for @ MACHINE, 
to be applied to BOATS aad other VES=- 
SELS, &c. ; 
A Patent has vised granted to Mr, 
Epwarpb Sreers, of the Inter Temple, 
for a Machine, to be applied to Boats and 
other Vefiels, for the purpofe of moving 
them along with eafe and celerity. 
This invention confifts of two-or more 
paddles, moving by means of machinery 
in contrary and alternate directions. ‘The 
paddles are fo conftruéted, that when the 
machinery is fet in motion, the broad fur- 
face of one or more of them will prefs. 
againft the water, while the broad furface 
of the other _or others will give way to it, 
by which means the vefiel “will be moved 
along. 
. — 
MESSRS. GOULDING and Co. for an 
IMPROVEMENT i@ the- CONSTRUC- 
TION of the CLARINET. 
A PatenrT has been granted to Meflrs. 
Govu.orne and Co. No. 45, Pall-Mall, 
for an improvement in the conftruction of 
the Clarinet. 
The clarinet is a mufical i infrument nove | 
much in vogue, and it has been found 
that by long | ule it is liable. to get out of 
tune 

