186 



THE MINERALS OF NEW SOUTH WALES. 



amount of ash varies considerably, the coal from some of the 

 Northern pits not containing more than about 2-0 per cent., while 

 some of the Western and Southern coals contain from 8 to 14 per 

 cent. In some cases the seams are from 30 to even 40 feet in 

 thickness. 



Localities. — Owing to coal being widely distributed over New 

 South Wales it would be almost an endless task to mention the 

 names of places under which it lies or at which it crops out, it must 

 therefore suffice to refer the reader to the mineral map published by 

 the Government. 



The area of the various coal fields of New South Wales is 

 approximately estimated at some 24,840 square miles. 



The amount of coal raised during the year 1874 was in 

 numbers : — 



Northern Gold Fields 1,1 26,000 



Southern do 137,000 



Western do 44,000 



round 



Total 



1,305,000 tons. 



Valued at about £975,000. 



For analyses of the coal raised by the various pits in New South 

 Wales, I must refer you to my report made to the Mining Depart- 

 ment, and now in course of publication by the Government; 

 but there are one or two other analyses which are not included 

 in that paper ; the following is by Mr. Rich. Smith of the School of 

 Mines, London : — 



Bulli Coal 





Carbon 



... 75-57 



Hydrogen... 



Oxygen and Hydrogen . . 



Sulphur ... 



Ash 



4-70 



... 4-99 

 ... 0-54 

 ... 13-17 



Water 



... 1-03 





100-00 



Coke 



... 74-78 



Volatile gaseous matter . . 

 Water 



... 24-19 

 1-03 





100-00 



Sp. gravity = 1*471. 



