$60 Notice of’ eeriain processes in the Aris. 
tained at the openings of these tubes, and the flame from the 
gas-burners is drawn forcibly upwards, so that it passes di- 
rectly through the meshes of the muslin, and is seen as dis- 
tinctly above the web as below. This contrivance also 
serves to convey off the smoke produced by the burning 
fibres of the cotton, and which was formerly very disagreea- 
ble, and even distressing. The finest muslins are passed 
through this machine twice, once for each side, and the 
eoarser four times. They rarely take fire, although the mo- 
tion is by no means rapid and the improvement in the smooth- 
ness and texture, is obvious to the most inexperienced eye. 
In passing over the flame it is sustained by bands of fine 
twine at the distance of an inch from each other, and it is 
surprising to observe that after passing for months in succes- 
sion over the flame, they experience no change butthe ac- 
cumulation of tar from the gas. , 
Bleaching Powder, Sulphuric Acid, Alkalies, &e. 
was much interested in the manufactory of Mr. Charles 
‘Pennant, near this town, whose personal liberality and intel- 
igence are not less gratifying than the results of We ingenui- 
ty. The original object was the manufacture of the bleach- 
ing powder now so extensively used; but he has combined 
everalo' swith it, in a manner whicli materially contributes 
to the success and profit of the whole. The buildings of 
the establishment cover a space of five or six acres. One 
large section is devoted to the manufacture of sulphuric 
id. The nitre, instead of being combined with the sulphur 
in this operation is paces in a separate portion of the furnace, 
retorts. 'T 
each, and weighing 500 or 600 ounces. Their value cannot 
be estimated at less than ¢ 2,500 for the 
whole, and yet itis believed to be more economical than to 
employ the perisha 
