184 NEW SOUTH WALES COALS. 
Coke.—Good, firm, bright and silvery lustre, well swollen up, 
with small caulits ower-like excrescenses. 
Ash,—Loose and flocculent, reddish colour. 
Ultimate Analysis. 
arbon 81°06 Dried at 100° C. 
Hydrogen 581 
xygen 6°52 
Sulphur. 1°14 
Nitrogen 1°23 
sh 4:24 
—_— 
The calorific intensity calculated from the above is 8,271 units 
According to experiments with the calorimeter 1 Ib. of thse 
would convert 14-3 lbs. of water into steam. 
Analysis of Ash. 
Silica... me = sa oo . doo 
Tron cc neg ee o ai oe 
aay ER Ge: i el . absent 
Magnesia... ae ae one site 30 
Mg oy ie x es ie Mae 
Pacephonts One: :.. oie se ... ‘trace 
Sulphuric acid ea ne ae ee 
Erie: 
Nodular Coal.—A smooth, rounded, nodule of f anthracis ol coal 
h 
than the ordinary coal, in which I understand it was am 
embedded—the rounded form is apparently not due to attrition 
the action of running water ; but appears to be of a concretionary 
nature. 
On being struck with a hammer the massflew to pieces, casi itd 
been in a state of strain or tension; the fragments W nodules 
showed conchoidal fracture surfaces. I believe that these 
are sometimes met with of much larger size. 
Specific gravity, 1-294. 
Proximate Analysis. 
etatys oi by ae 
olatile drocarbons ses ves vee 
Fixed cuticle oe 
Sulphur ~ = vii ecg 
