= Cox.—On the Mineralogy of New Zealand. 869 
The average of thirteen analyses of the true brown coals from this district 
give 
Fixed carbon .. A e sa. AP 9 
Hydro-carbon.. 23 m vo BECO 
Water .. oa es 5E ce eM 
Ea — kn ve ee i: 4:84 
100-00 
as their composition, the fixed earbon varying from 49 to 88 per cent., and 
the water from 18 to 24 per cent. The coal from the different mines does 
not vary a great deal in character, for good and inferior samples can be 
obtained from each. 
Besides that at the Malvern Hills, there are two seams of brown coal, — 
each 10 feet thick, at the Rakaia Gorge, of which the average composition 
is— 
Fixed carbon .. A js 2 45°76 
Hydro-carbon. . m Ei <. 26°62 
Water .. us A a Pia ort i 
Aa Se it vi Gé d 8:91 
100-00 
and at Mount Somers a seam 25 feet thick occurs, having a composition 
ub 
Fixed carbon .. ka ite vc 118960 
Hydro-carbon vy ^T eo 89:20 
Water s rie oe Lu 8:80 
AU ori 3A 12:40 
100:00 
In Otago there are brown coals of an inferior character near Oamaru ; at 
the Green Island near Dunedin ; and several other localities in which small 
mines only have been opened to supply local demands. 
The Green Island Mines, of which there are seven, are working 
seams of coal from 13 feet to 19 feet thick, and to a great extent 
supply Dunedin with household fuel. The coals have an average com- 
position of 
Fixed earbon .. d a «> 40°84 
Hydro-carbon ka P y: 0BO BR 
Water .. ve pe i duc MET 
ABB 5. = 8:92 
100-00 
