510 Notes, chiefly Geological, [No. 163. 



the Pupal jungle near Yengunapilly, about eight or nine miles in a 

 southerly direction from the Bungalow.* It is a low hill, rising abruptly 

 from the Regur or cotton ground at its base, with a gentle slope 

 from the east into low cliffs of limestone which front the west, towards 

 which quarter the hill falls with an abrupt and steep declivity. The 

 surrounding hills are mostly of sandstone. The base is composed of 

 a crystalline bluish grey limestone passing, as the cliff ascends, into 

 a number of beautiful shades of red, yellow, green, and white. Some 

 dark green varieties resemble precious serpentine ; others imbed silvery 

 white, and yellow pyrites. Calc spar, white, fibrous, and pale yel- 

 lowish brown, occurs in veins, and coating fragments of rock. On the 

 eastern slope of the hill is an excavation, whence the Brahmins dig a 

 chalk, which is used for marks of caste, and for white-washing houses. 

 At Putsa Marculpilly a massive asbestus, associated with a white 

 magnesian and calcareous earth, occurs in a bed in the limestone. 

 The former is of a dull greenish grey colour, passing into a mottled 

 yellowish white. It is tough under the hammer, and breaks into 

 fibrous flexible fragments. 



Junction line of granite with the Limestone and Sandstone formation 

 near Yairypully. A mile or two west from Ryelcherroo, betweep the 

 granite range north of Gooty on the west, and the limestone and sand- 

 stone hills of Ryelcherroo on the east, extends a plain about a mile 

 broad intersected by a nullah, which I examined in vain for a section 

 showing the junction of the limestone with the granite. The surface 

 of the plain is covered with angular pebbles of quartz, chert, jasper, 

 and of a breccia composed of angular bits of quartz, derived probably 

 from the granite, imbedded in a jaspery paste, and of a sandstone grit 

 imbedding reddish jasper and chert, which is seen in veins in the 

 limestone. The limestone composing the hills on the eastern boundary 

 of this plain is siliceous ; so much so, as to afford sparks with steel. 

 It alternates in the same hill with a purple and yellowish shale, and a 

 crystalline sandstone, which is generally found capping the summits. 

 There are a few exceptions, however, where the limestone continues to 

 the summit, the sandstone having been stripped off by denudation. 



* The Mussulmans, from the supposed qualities of the stone in discovering poison, 

 call it " Pad-zahr" or Bezoar stone. By the Hindus on the spot, it is called " Gurha 

 Putsa Rai." 



