COALS OF NEW SOUTH WALES. 167 
WaraTaH COLLIERY. 
Specific gravity of coal, 1-293; percentage of ash, 4°64 ; 
col h, 
our of as. 
Analysis— 
Alumina ae 92:31 
Ferric oxide... eae oe eee 
Lime a i Fes Els 2°41 Soluble in acid 
Mepis . ..  ee 
Sulphuric oxide... “sk 71 
Phosphoric ,, ies vee ae | 
Alumina... ay: ai 8 
Ferric oxide... ses ... 2°31 | Insoluble in acid 
Silica ... 5617 63:07 
Patiesa ccd and eae he 12 
. 100-00 
REDHEAD, near Newcastle. 
Specific gravity of coal, 1-325; percentage of ash, 6-84 ; colour of 
ash, < 
Analy . grey. 
Alumina... ee = 22 
Ferric oxide... a ee yf 
Lime vee wt - 1°96 | gojuble in acid 
Magnesia, ons es 1 23°17 
Sulphuric sashes i ne 45 
Phosphoric ,, : 172 
meme oh ic. 3-5. oes 608 
. Ferric Bere ee ... 1°97 | Insoluble in acid 
Silica > eee 65 
Wodbbscininisd and loss... ‘18 
This sample contained no chlorine. 
