TALCHEER COAL FIELD; 55 



boundary of the field, apparently brougbt against the gneiss by small 

 faults, till they are cut off by a fault near Gusirimal, re-appearing again 

 beyond, but apparently soon again cut off by other faults. The 

 small dislocations of this part of the boundary are very difficult to 

 understand, but affect its general course very little. 



In a section of the blue shales in the River Brahmini, a short distance 

 below the village of Serang, and also in the shales South of the fault 

 between Kamlong and Ningrakota, rounded pebbles or small boulders 

 of gneiss have been observed. (Fig. 6.) 



Rati 



At first sight, as the pebbles, as here seen, are but few ia number. 



Boulders or pebbles of *^®"" occurrence might perhaps be referred to the 



gneiss in the shale. same cause to which similar appearances of pebbles 



in the chalk formation in England have been attributed, viz., the 



transporting power of tree-roots, &c. 



So exceptional a mode of transport does not seem to afford a 



T, ,. ^ „ satisfactory explanation of such phoenomena, and 



Iransporting agent ? j r r > 



not tree-roots, &c. it would appear, in this case, to be entirely set 



aside by the total absence, as far as observation showed, of any traces 

 of wood or carbonaceous ihatter, which must surely have appeared if 

 pebbles, to any extent, had been drifted down by tree-roots, &c. 

 Moreover, when the consideration of this fact (viz. pebbles occurring in 



