It is obferved, that the beft Urine is that which comes 
from poor labouring People, who drink lictleflrong Drink. 
The Boy ling Pans are made of Lead^Eiing feec long, five feet 
broad, and two and a half deep; ftt upon Iron PJates about 
two inches thick, which Pans are commonly new caft, and 
the Plates repaired five times in two year^. 
Whenche Work is begun.and once made^then they fave 
the Liquour which comes from the Jlum^ or wherein the jilum^ 
ffiootsj which they calJ Mothers. With this they fill two 
third parts of the Boylers, and puc in one third part of 
frefli Liquor which comes from the Pics. BeiHg thus filled up 
with cold Liquor, the Fires having never been dravvnour, 
will boil again in lef? than two hotirs rime. And in every 
two hours time, the Liquor will wafte four Inches, and the 
Boylers are filled up again with green Liquor. 
The Liquor if good, will in Boyling, be greafy, as it were, 
at the top; if Nitrous, it will be thick, muddy, and red. In 
boylingtwenty four hours, k will be thirty fix pound weight. 
Then is put into the Boyler about a Hogs-head of the Lees 
of Kelp, of about two peny weight, which will reduce the 
whole Boyler to about twenry feven pound weight. 
if the Liquor is gocd, as foon as the Leesof Kelp are pu^ 
i-nto the Boyler, they will work like Yeft put to Beer. But 
if the Liquor in the Boyler be Nitrous, the Kelp- Lees will ftir 
it but very little • and in that cafe, the Workmen muft put in 
the more and flronger Lees. 
Prefently after the Kelp Lees are put into the Boyler all the 
Liquor together is drawn into aSecler,as big as theBoyler,made 
of Lead, in which it ftands about two hours ; in which time, 
moft of the Nitre and Slam fink to the bottom. 
This reparation is made by means of the Kelp-Lees. For 
when the whole Boyler confifts of Green- Liquor drawn from 
the Pits it is of power ftrong enough to cart off the Slam and 
Nitre : but when Mothersare ufed,the Kelp- Lees are needful] 
ro make the faid reparation. 
Then the faid Liquor is fcooped out of theSetler, intoa^ 
CooIer,madeof DeaNboards.and rammed with Clay. Into this 
is put 20* Gallons or more of Urine , more or lefs, according: 
to the goodnefs or badnefs of the Liquor. For if the Liquor- 
be red, and confequently Nitrous5the more Urine is required.. 
