310- Onthe Process of Bleaching with 
and over the pulley S: The use of the friction, 
produced by this weight, is to make the cloth wind 
tight upon the other axis. But as the effect of the 
weight will increase as one cylinder increases and 
the other lessens, I recommend that three or four 
weights, be suspended on the cord, which may be 
taken off gradually, as the person who works the 
machine may find it convenient. As the weights 
hang in open hooks, which are fastened to the 
cord, it will be little or no trouble to put them on 
and to remove them. 
_ Things being thus disposed, the bleaching 
liquor is to be transferred from the vessels in 
which it has been prepared into the apparatus, 
by a moveable tube passing through the tube 
I, and descending to the bottom of the cistern. 
This tube being connected with the vessels, by 
means of leaden or wooden pipes provided with 
cocks, hardly any vapours will escape in the trans-- 
fer. When the apparatus is filled up to the line a, 
the moveable tube is to be withdrawn, and the tube I 
closed. As the liquor rises above the edge of the 
rim G, and above the tubes H H, it is evident that 
no evaporation. can take place, except where the 
rim does not apply closely to the sides of the box : 
which will, however, form a very trifling surface if 
the carpenter’s work be decently done. The cloth 
is now to be wound from the axis L upon the axis 
K, by turning this; and when this is accomplished, 
the handle P and pulley Q are to be changed, and 
