Jan. 1851. 



GURJUN, OR WOOD-OIL TREK. 



349 



downwards, and lighting fires in them, which causes the 



oil to flow.* 



On the 8th of January we experienced a sharp earth- 

 quake, preceded by a dull thumping sound; it lasted about 



GURJUN TREE. 



twenty seconds, and seemed to come up from the south- 

 ward ; the water of a tank by which we were seated was 



* The other trees of these dry forests are many oaks, Henslowia, Oordonia, 

 Engelhardtia, Duabanga, Adelia, Byttneria, Bradleia, and large trees of Pongamia, 

 whose seeds yield a useful oil. 



