3.  As  the  hist ;  but  taking  only  6  parts  of
treacle,  1  part  of  oil,  and  omitting  the  gum-
arabic.  Good.  A  commoner  article  of  liquid
blacking  does  not  sell.
4.  (Bryant  and  James's  Isdia-eubbee
LiQtJiD  Blacking.  Patent  dated  1836.)  Take
of  India  rubber  (in  small  pieces),  18  ot. ;  hot

1  Sperm  oil  is  conimoaly  re^firded  as  the  best  for  btHrk-
in'^  \  oat  pale  seal  oil  is  Ihoui^lit  by  some  to  be  quite  hs
good.  Tlie  cod-liver  oil  of  tlie  curriers,  if  clear,  is  less  ex-
pensive, and  probably  better  than  either  of  tliem  Common
olive  oil,  anu  refined  rape  oil,  are,  however,  those  most
generally  used  by  the  blHckin^i-makers.
s  That  is,  S  to  3i  times  the  weight  of  the  ivory-black.
s  Metallic  vessels  must  he  avoided.
4  By  taking  the  '  purl  s '  ordered  in  this  and  the  other
formulte  as  so  many  \  lbs.,  /6j(.,  J  cwts  ,  or  cwts..  the  pro-
portions of  each  ingredient  for  any  quantity  of  blackmsr,
from  a  J  of  a  (4  ,  or  a  J  ^iii<,  up  to  2  Ions,  or  nearly  4bll
{falls.,  will  he  at  once  seen;  and  so  on  of  evea  larger
(|Udntities.    See  Com-luding  t^einarks  {infra).
