50 



Notes, chiefly Geological, of a Journey 



[Jan. 



valescents had engorgement of the spleen, or other abdominal viscera, 

 which eventually terminate in dropsy, berriberri, or other sequela, 

 most of which prove incurable, and at last end fatally. The condition 

 in which the Governor found the hospital, although unavoidably crowd- 

 ed, gave great satisfaction, and did credit to Dr. Davison's zeal and 

 exertions. 



Nullacherla, Jan. 28.— The plain, which surrounds Nullacherla for 

 some miles, is covered with a sandy soil, overspread with numerous 

 pieces and blocks of sandstone. The grains of quartz, in this last 

 mentioned stone, are cemented by a ferruginous paste, which gives to 

 the rock a deep red, or purple, colour ; the loose pieces apparently have 

 undergone long attrition, being rounded, or at least their angles very 

 much blunted. In many places there are blocks of the same rock 

 jutting many feet above the soil, and evidently impacted deeply in it. 



In these last mentioned rocks the stratification is quite evident (No. 

 16), and in many pieces the iron is in such a quantity that they might 

 be called siliceous iron ore, rather than sandstone (No. 17). About 

 half a mile before we come to this sandstone, in the middle of the road, 

 are seen some projecting blocks, of a black colour and cavernous struc- 

 ture, so as to simulate lava, for which I took it at first, when at some 

 distance ; but, on a closer examination, it proved to be the lateritic 

 stone of this part of India, differing from that of the Red Hills, and 

 other localities of the Carnatic, in containing snore quartz, being more 

 cavernous, with more sinuosities, which are empty, not being lined by, 

 or filled with, felspar (No. 18). It is evidently a conglomerate rock,' 

 some of the composing pebbles being carbonate of iron, of a dark 

 brown colour. As these lateritic rocks are, as it were, impacted in 

 others of purple-coloured sandstone, and protruding in a similar way to 

 those of the latter rock, we may infer that the cavernous iron ore forms 

 a bed in sandstone. 



Puddapangallee, Jan. 30.— About five miles before reaching this 

 place, and between it and Yernagorium, is seen a small hillock, to the 

 right hand side, near the road. I was riding in company with my 

 friend Colonel Cullen, conversing on the geology of the district we 

 were travelling through. He told me that just before us there was a 

 very interesting phenomenon ; nothing less than shell-limestone under- 

 laying, and alternating with, basalt. Before reaching the place I saw 

 in the dry beds of the torrents, and in the ditches on both sides of the 

 road, a very compact, conglomerate sandstone, which I will hereafter 

 describe. 



As may be supposed I was extremely anxious to arrive at the locality 

 indicated by Colonel Cullen, which we did, in less than half an hour. 



