Notice of certain processes in the Arts. 859 
ART. XVL.—Notice of certain processes in the Arts. Commu- 
nicated to the Editor in a letter from an American ose 
man, dated Glasgow, Nov. 25, 1825. | 
Singeing of Cotton Stuffs by the gas flame. 
Te manufactories here are generally closed against stran- 
gers; but I have obtained access to two of them, which are 
inighlyi oe I believe the process of i, mig muslins 
s of the gas flame has been describ 
aunts. Within a year past it has been beagle toa great 
degree of perfection here. The process by which these fine 
textures were passed over red hot cylinders -_ was 
sufficiently astonishing; but one is ready to dou the evi- 
dence of the senses, when he sees a web which is so delicate 
as to be transparent, subjected to the direct operation of 
flame, two or three times in successi m, and with no change 
but an improvement in beaut 
The machine on which the operation is performed, consists 
ofan upright frame, sustaining two large rollers, one on each 
side at the bottom, and two pairs of rollers like those of a 
rolling-mill immediately above these, at the top. Between 
the upper rollers, the gas pipe passes the whole length of the 
frame, thickly set with openings serving as burners, so that 
th ppear to be from 5 0 to 100 in the space equiva- 
e bread oth. In performing the opera- 
the lower roller on one 
air above, pe TK 
age of mon La oiesd 
the flame ‘* the motion of the Siee, origina in laidiava 
engine and communicated by drums and heal in the usual 
nant It was not found sufficient merely to pass the muslin 
ve the flame, and thergfore another contrivance was added, 
of _ great ingenuity, which renders the operation more sur- 
prising. A pipe passes above the cloth in the same direction 
as the gas pipe, with longitudinal slits and openings to a main 
pipe above, corresponding nearly to the gas-burners. This is 
connected with the receiver of a large air-pump, whichis kept 
inmotion by the — A partial vacuum is thusmain- 
