The  sample  was  too  small  to  afford  an  opportunity  of  making  all  the
trials  which  might  have  been  desirable.  No  trial  is  recorded  as  having
been  made  in  the  office  grate ;  but,  from  the  characters  it  exhibited  in  the
furnace,  no  reasonable  doubt  can  be  entertained  of  its  proving  satis&ctory
for  domestic  purposes.
A  sioffle  trial  of  heating  power  by  the  oxide  of  lead  on  specimen  a
jrielded  26.325  times  its  weight  of  metallic  lead.  Deducting  18.625  per
cant,  the  sum  of  its  earthy  matter  and  moisture,  this  gives  to  1  of  com-
^         te  A  MdQctiva  power  of  31 .083.
M    W  laUes  exhibit  the  mode  of  action  of  this  coal  under  the
vbeeqaent  table  of  deductions  exhibits  all  the  important
ih  they  lead.
