830 Mineral Resources of India. [No. 129. 



of the Buccooah nulla, that is only half a coss from Kussyaun, a place 

 well known, which evidently discovers that there must be a stratum. 

 It was near to this village that Mr. Prinsep many years ago found 

 copper, and commenced an extensive manufacture of vitriolic acid." 

 Eurdwan, April 6. T. Marriott. 



It appears from this letter of Mr. Marriott's, that the sample of coal 



sent down by him for Government, and by Government to the Board 



for a particular report, was part of a heap lying at Mudjea, but dug at 



Cheenacoorey and Damully by Mr. Heatly. Upon this sample^ we have 



the subjoined 



Minute by Lieut. Col. Hardwicke. 



In compliance with the desire of the Military Board, I have the 

 honour of making a communication on the Pachete coal, submitted to 

 me for experiment and report thereon. In the first place I shall notice 

 some particulars and peculiarities descriptive of the substance in ques- 

 tion, and then give the result of the few experiments made upon it. In 

 its appearance and some of its properties, it approaches nearer to the 

 " bituminous oxide of carbon," known in England under the denomina- 

 tion of Bovey coal, than any other substance I can compare it with. In 

 texture it is lamellar, the laminae subject to two very dissimilar ap- 

 pearances, the one evidently marked with the woody fibre, and resem- 

 bling pure carbon or charcoal ; the other of a full shining black, 

 opaque, very brittle, and breaking with a rhomboidal fracture, both 

 irregular and mixing one into the other. The first rubs easily into 

 powder, and sticks to the fingers on handling ; the other does not soil 

 the fingers when rubbed. Its specific gravity is greater than the coal 

 here used, called sea-coal, being to that as 145.75 is to 135, taking 

 water at 100 as the standard of comparison for both. It burns with a 

 clear whitish flame without sparks or crackling, as coal and charcoal 

 commonly do ; emits little or no smoke, and without odour, burns for a 

 considerable time without producing ashes, and with little change to 

 either its form, bulk, or weight. The degree of inspissation in this 

 bituminous substance must be very great, and the carbonic principle 

 so prevalent, that it can scarcely be termed bituminous. In combus- 

 tion, it discovers none of those appearances common to good coal ; it 



