156 
Bleaching of 
Direction a for making 225 gallons of liquor for ‘whitening btujf 
for fi a fi erm a kers . 
First put into the still 21 gallons of salt brine, as strong as can 
be made, which may be known by putting in salt until some of it 
remains iinmelted, then put into a box 45lbs, of the best salt, like- 
wise 90lbs. of the best ground and powdered manganese, mix 
them very well until all appears as manganese, then put that mix- 
ture into the still, put on the head of the still, first stirring orblend- 
ing it with a shovel until it is in motion, then have 126lbs. of the-, 
best vitriol in 6 jugs ready, put some vitriol into the tundish, first 
putting in the service pipe and luting it with clay as you see in 
the plan, then let in the vitriol gradually until you hear the jug on 
the reservoirs blab, then stop the vitriol, which must be done by a 
small iron rod made for that purpose to fit it, so let in your vitriol-' 
by degrees until all is in, which must not be less time than four 
hours at least, then 33 minutes after being in, light the fire and 
keep it very moderate for 10 or 12 hours, then you may keep the 
fire something stronger for the remainder of the time until the 
operation is finished, which will be 24 or 25 hours from the first 
putting in of the vitriol, then stop the ear pipe of the lid and let 
it stand 14 hours at least before you draw it off for use. 
N. B. W nen the vitriol is all in, take out your tundish and 
have a ball of clay for luting the place it stood in; first of all, fill 
your reservoir with clear water to within 7 inches of the top of 
the consolidating lid— then put into the reservoir 50lbs of the best 
hot lime, finely sifted— agitate the reservoirs for 15 minutes, 
then put on your lid and fix your bubbling jug as you see in the 
plan; let the agitator be kept turning during the whole process, 
especially when the vitriol is going in ; after you draw oft your 
liquor in bottles, what remains in the reservoir of lime and liquor 
put it in a hogshead and fill it with water, stir it and let it stand 
until the next work, by putting it in the reservoir that you may 
have no loss ; the same is used in what remains in the still of the 
old lees, let it be put in a vessel or cistern which stands contiguous 
to the still, and is also lined with sheet-lead ; always used it will be 
a saving, as it answers better than the first by keeping it up to the 
21 gallons with brine as directed; the saving is this, viz. that in-* 
stead of 90lbs. manganese 74lbs. will be sufficient and 34ibs. salt 
instead of 45. 
N. B. You are to take the greatest care not to let any of the 
manganese touch the reservoir, as the least particle, of it would 
spoil the whole process. 
