>>  >> 
*ba  "be 
a  n 
o  o 
Insol.  matter, 
such  as  silica 
and  carbon. 
Present 
Arsenic. 
Faint  trace 
Traces 
Faint  traces 
Absent 
Traces 
Slight  traces 
Faint  traces 
Faint  traces 
Faint  traces 
Absent 
Faint  traces 
Absent 
Sulphides  indi- 
cated by  lead 
acetate  paper. 
Faint  trace 
Traces 
Traces 
Traces 
Traces 
Traces 
flight  trace 
Heavy  traces 
Heavy  traces 
Faint  trace 
Traces 
Faint  traces 
Sulphides 
indicated  by 
smell. 
Nil 
Slight  smell 
Nil 
Nil 
Distinct  smell 
Distinct  smell 
Distinct  smell 
Strong  smell 
Strong  smell 
Nil 
Nil 
Nil 
Per  cent, 
of  do. 
vo               t>.      it      vo      <o       CS       <~0     no       ■-•       f-  r<3 
oo      mvo      ^t-i-c      >-h             •-•     no     no  oo 
oo     r^r^covo      ^-    no            no  r^Tj-oo 
Free  Fe 
found. 
O       On                                           CO      CO                lo  On 
OlOVO-0-*OOt^vOO\iO 
5  o£» 
Si  <« 
~  a 
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