1845.] Note on a curious Sandstone formation at Sasseram. 497 



in their formation no trace is left of the globes ever having, at any- 

 period, been at rest. Had they been so, the point d'appui, or that part 

 pressing or resting on the ground, most certainly would not have had 

 the concentric strata passed under it ; that the strata are concentric to 

 a common nucleus I have proved by bursting open many of the globes, 

 the strata invariably exfoliating as in Nos. 3 and 4. The nucleus, 

 whatever it may be, must be an exceedingly small and insignificant par- 

 ticle, as I have fractured through several globes to within a quarter of 

 an inch of the innermost centre, and found nothing ; the strata varying 

 from the fineness of a hair to six inches in depth, and the spheres from 

 six feet diameter to the size of a pea. 



Having noticed a series of what I thought were the projecting edges 

 of small shells running in a straight line nearly parallel to the major 

 axis of one of the elliptical stones, and traversing all the strata, (vide 

 No. 1, fig. a,) I had it broken open in that line ; and in so doing, exposed 

 to view a bed of about a foot in width, of very closely compressed 

 blotches, of a delicately soft argillaceous substance, of a pale yellow 

 color, impalpably fine when dissolved in water ; no individual particle 

 being visible under a powerful lens. 



I traced this curious formation for about two hundred yards along the 

 base of the hill where it suddenly ceases, the sandstone regaining its 

 usual horizontality of stratification. ' 



Notes, chiefly Geological, across the Peninsula of the Southern India, from 



Madras, Lat. N. 13° 5' to Goa, hat. N. 15° 30' by the Baulpilly 



Pass and Ruins of Bijanugger. By Captain Newbold, F.R.S., 



M. N. I., Assistant Commissioner Kurnool, Madras Territory. 



Physical aspect of the plain between Madras and the Nag gery mountains. 



The country lying between Madras, and the Eastern Ghaut line of the 



Naggery hills, is a maritime plain, about 34 miles broad, rising gently 



towards the base of the mountains. It is watered by the Coom stream, 



which finds its way to the sea at Madras, and by the Cortelair which, 



after receiving the Naggery river, communicates with the sea by the 



salt lagoon of Ennore, about ten miles North of Madras. 



A few gentle undulations or swells running generally to the S.W. 

 alone interrupt the flat monotony of this great plain, the surface of 



