Hy  Ihe  mean  of  four  incinentiona,  a  gave  of  earthy  matter  LI^  >Qd  &
tt.M  per  rent

Uenoe  the  composition  of  these  two  specimens  may  be  stated  asfolloTB :

Moisluie
Sulphur

Other  volatile  matter,  by  mean  oi\
rapid  and  slow  coking  j

Eurthy  matter
Fixed  carbon


The  volatile  to  the  fixed  combuslilile  lTl.756

imitUng  that  the  moisture  in  the  two  samides
1  to  that  derived  from  the  38  pounds,  the '
D.479-0.892  =  39.587  per  cent
-mring  the  trids  of  its  evaporative  pown.
■«1  3,7%  pounds.
Th«  ashes  withdrawn  arnoanU
■oottoia-aSpoooAi-


Specimfn  4.
1.786
0.376

34.851

1.120

61.865

100.
100.
1*1.756

1:1.748

Doe.  No.  276.  485

B7  roincineraliony  the  otAe*  lost       -  -  -  16.93  per  cent.
"  ihesooi    '  -  .  -  71.69      "

irhile  the  clinker  gained  a  little  by  calcination.
The  ashes  of  654.76  pounds  of  wood  was  2.01  pounds.
Making  the  reductions  here  indicated,  the  total  incombustible  matter  re-
aovered,  and  which  was  derived  from  the  coal  alone,  was  175  pounds,  or
1.622  per  cent.    F*rom  these  data,  entirely  independent  of  the  above  anal;
faes  of  a  and  6,  we  have  the  composition  of  the  sample  as  follows :
Moisture,  from  28  pounds  ....      0.892

Other  volatile  matter,  by  two  specimens  -  -    39.587

Earthy  matter,  from  3,786  pounds         ...      4.622
Fixed  carbon,  by  difference      ...  *    64.899

100.
Yolatile  to  fixed  combustible    -  -  -  -  1 : 1.613

The  earthy  residuum  from  the  analyses  of  the  two  specimens  a  and  6,
of  a  dark  brown  color.  The  clinker  was  compact,  of  a  reddish -brown
color,  not  in  large  masses ;  vitrified,  but  containing  small  bits  of  light  slaty
matler.  When  pulverized  and  recalcined,  it  became  of  a  deep  brown,  or
dark  red  color.
