Method  of  tanning  Leather,  121 
five  or  fix  inches  diameter,  which  is  to  be  flopped  Math  a 
plug.  Let  this  hole  open  over  a gutter. 
iv.  The  ciflern  mu  ft  be  covered  with  a flooring  of 
boards,  ftrong  enough  to  bear  a man’s  weight ; and  from 
fide  to  fide  of  this  lid  there  muft  be  an  opening  of  two 
or  three  feet  wide. 
v.  If  it  can  be  fo  contrived  that  a water-pipe  may  be 
led  into  the  ciflern,  it  will  fave  the  fervants  a good  deal 
of  trouble;  but  if  this  cannot  be  done,  a pump  muft  be 
fixed  in  the  molt  convenient  way,  for  the  purpofe  of 
filling  it  from  time  to  time. 
vi.  The  ciflern  being  once  fixed  (which  is  all  the 
additional  apparatus  that  the  new  method  of  tanning 
requires)  the  making  of  lime-water  will  be  found  ex- 
tremely fimple  and  eafy. 
vn.  You  are  firft  to  fill  the  ciflern  with  water,  and 
then,  for  every  hogfhead  that  it  may  contain,  throw  in 
ten  or  a dozen  pounds  weight  of  unflaked  lime. 
viii.  Mix  the  lime  thoroughly  with  the  whole  body 
of  the  water,  by  ftirring  it  exceedingly  well  from  the 
bottom,  with  a bucket  and  plunger,  until  you  perceive 
that  the  lime  is  completely  diffufed,  and  the  whole  mix- 
ture grows  as  white  as  milk ; leave  it  then  to  fettle  for  a 
couple  of  days,  that  the  undiffolved  part  of  the  lime  may 
Vol.  LXVIIL  R entirely 
