282 Dr. Voyseys "Private Journal [No. 4. 



from the hill. At its foot were vast quantities of granite, bared, mixed 

 in all possible ways with the greenstone, exactly like Bachapilly. 



30th July, 1819. — The whole of the granite in this neighbourhood 

 is alike ; the bottom consisting of the greenstone and micaceous granite 

 intermixed with the granite in veins, blocks, &c, the resemblance of 

 which to a stream of lava is very great and the course being always 

 from the upper to the lower level. On this is placed the concentric 

 lamellar granite containing small and large masses of crystallized 

 hornblende. On this are masses with their interstices vertical, decom- 

 posing gradually and forming loggan stones, of which many are actually 

 formed ; some on the concentric granite ready to fall as soon as the 

 decomposition of the lower surface has changed their centre of gravity. 



6th August, 1819. — Just before our arrival at Singharam, we passed 

 through a very considerable deposit of the trap the extent of which I 

 was unable to trace from the thickness of the jungle. We passed over it 

 for about a furlong ; I observed in the river both trap and granite in 

 large blocks. 



7th August, 1819. — "We passed through a very thick jungle formed 

 principally by thorny mimosas, attended by the granite as usual ; when 

 arrived at about half our distance, without any perceptible transition, a 

 slaty rock appeared in our path, and from the elephant's back I observ- 

 ed a flat platform nearly parallel with our path of about a mile in 

 length, I walked to it and found it to consist of brownish red clay- 

 slate, of a kind which would be useful in roofing houses. Its termina- 

 tion was at a nullah, in the bed of which I observed granite of a por- 

 phyritic texture passing into a rock resembling large grained sandstone, 

 which became clay slate of the kind before mentioned. There existed 

 no separation or line of distinction between these three rocks, and I 

 had a fair opportunity of observing them from the lower side of the 

 nullah of the opposite high bank in which the passage was distinctly 

 visible. At this nullah it ceased and the usual rock granite continued 

 to appear at intervals. About four miles from the Kishiar at the 

 place called Piedderee, the horizontal limestone before mentioned (see 

 page 1 98) made its appearance ; it differed in no respect from that 

 formerly described : it is, except its colour, a little darker than 

 that on the banks of the river at Warripilly. Everywhere was seen 

 detached pieces of the pudding-stone enclosing rounded and smooth 



