COALS OF NEW SOUTH WALES. 165 
Co-oPERATIVE CoaL Company’s a Plattsburgh, near 
New 
Specific gravity of coal, 1- Ais; 5 verona of ash, 4°20 ; 
colour of ash, reddi 
Analysis— 
Alumina... fet ee 
Ferric oxide... awk a ee 
Lime tie se Oe. S| Solable:in ‘acid 
Magnesia... = wwe 7 SOS 40°43 
Sulphuric oxide... = 72 
Phosphoric ,, tin <n aoe 
Alumina... tea we  O9e 
Ferric oxide... we 317 : : 
RN he cos. a, kp | ee od 
Silica ve §O-32 
Daioheeminad and on ia 69 
100-00 
NeEwcasTLE WaLLsEND COLLIERY. 
Specific gravity = mag 1-347 ; ee of ash, 4°28 ; 
ur of ash, r 
Analysig— 
Alumina... pee ses. eee 
Ferric oxide... uae +? 21:20 
Lime abe ene wo OOO) Bee ee aad 
meine oS 1s 39-78 
Sulphuric oxide out 83 
Phosphoric ,, ee Ee 
Alumina 6-48 
Ferri * ‘ 
ne agmen diekg GOT LT 
32 60-73 
Magnesia ‘41 
Silica “ic Oak 
