118 Memorandum on the Geological structure [No. 2. 



in very many places. It differs much in quality. Some specimens 

 appear almost indentical with French chalk ; the stone of Doobraj- 

 pore in Seraikela is of this sort ; others approach English slate in 

 texture, as the stone from Tickree in Dholbhoom ; some abound in 

 iron pyrites as the Potstones of Korykela in Porahat and Eleegara 

 in Singhbhoom. Occasionally the rock appears to contain much silex, 

 as at Arrahanga on the N. Frontier of Khursawa. The Potstone I 

 consider a particularly valuable product, as the mines are inexhausti- 

 ble. They require little expenditure of capital and but little skill to 

 work, while on the other hand, the demand for the article appears to 

 be only limited by the means of transport, and it may be applied to 

 a great variety of purposes, for which it has not hitherto been used. 

 The profits on the dishes are said to be high. They are valued 

 according to their powers of resisting the effects of heat. The ves- 

 sels made at Tickree and Darhee in Dholbhoom are the most prized. 

 It will easily be understood how much the trade in a frangible and 

 bulky article, such as this is likely to be increased by the construc- 

 tion of cart roads. 



Ochre. 

 Red Ochre abounds in Pergunnah Sarunda in the Government 

 Khass Colehan. It is carried away in all directions in small quan- 

 tities. In the country, it is chiefly used for imparting a red colour 

 to cloth. It is obtained at the surface without any trouble in 

 digging. Yellow ochre is found in several places in Khursawa, and 

 is also applied to the same use as the red ; a white and pink coloured 

 earth from a soft slate or schist is found in several places. The 

 former is used by the Hindu residents for whitening the walls of 

 their houses, and is sold in the bazar of Chota JSTagpore as chalk. 



Corundum. 



The true Corundum is not, that I am aware of, found any where 

 in the Singhbhoom Division, but several varieties of stone applied 

 to the same purposes abound; for want of a better one, I class them 

 under this head. 



Garnitiferous schists exist in several localities, Jamsore in Dhol- 

 bhoom is the only place known to me, where the mineral is considered 

 hard enough for lac wheels. Here it may be obtained to any 



