I 20 
Dr.  macbride’s  improved 
Injlruclions  to  fanners,  for  carrying  on  the  new  method 
of  tanning,  invented  by  Dr.  macbride  of  Dublin; 
whereby  the  leather  is  not  only  improved  in  its  quality, 
but  tanned  in  much  lefs  time , and  with  a fmaller  quan- 
tity of  bark,  than  in  any  other  method  hitherto  known 
or  praSlifed. 
AS  the  new  method  of  tanning  depends  on  this  prin- 
ciple, “ That  lime-water  extracts  the  virtues  of  oak-bark 
“ more  completely  than  plain  water;”  the  firft  thing  in 
which  the  tanner  is  to  be  inftru&ed,  is  the  making  of 
lime-water. 
i.  Provide  a large  velfel,  in  the  nature  of  a ciftern, 
whofe  depth  fhall  be  at  leal!  twice  its  diameter,  and  of  a 
capacity  adapted  to  the  extent  of  the  tan-yard. 
ix.  This  ciftern  muft  be  fixed  in  a convenient  corner 
of  the  yard,  under  a fhed,  and  fhould  ftand  fo  as  that  the 
liquor  which  is  to  be  drawn  off  from  it  may  run  freely 
into  the  letches. 
hi.  There  muft  be  a cock  fixed  in  the  fide  of  the 
ciftern,  about  a foot  from  the  bottom,  to  let  off  the  con- 
tents; and  there  muft  be  a hole  in  the  bottom  of  it,  of 
five 
