PART 4.] 
Accessions to Library. 
115 
The nala which runs into the Godavari, east of Amravaram, exposes no rock for some 
distance from its mouth, and no good section is anywhere seen in it. Soft felspathic sand¬ 
stones and, towards the base, conglomerates are met with in it here and there. Even less 
rock is seen in the large Machimangh nala which runs past Kometlagudem. Sandstone only 
appears in this in the form of a few blocks, exposed just below the junction of the two princi¬ 
pal streams which unite to form it. The more westwardly of the two joining streams, how¬ 
ever, only traverses metamorphias for a very short distance: above this Talchirs are exposed, 
although there are none in the main stream a few hundred yards distant, where the meta- 
morphics and Damudas are seen within a few yards of each other. After about one quarter of a 
mile of Talchirs, Damudas or Kamthis (they are undistinguishable here) again come in dipping 
west south-west. There is a considerable quantity of coarse felspathic sandstone of various 
colours, mostly brown, or irregularly streaked, and hard ferruginous hands occur at intervals ; 
occasionally clay is found in the sandstone. Conglomerate is not prevalent, but it is mot 
here and there. 
There is absolutely nothing about these beds by which the} r can be distinguished from 
Damudas, hut there can he hut little doubt that the greater portion, if not all, belong to the 
Kamthis. From the general dip they must have overlapped the Amravaram beds. They 
appear softer than the rocks seen in the river’s bank near Amravaram and Madavaram, 
but this is not an important distinction. 
The hills near Kometlagudem are of open textured felspathic sandstone, usually white or 
pale brown in colour, with hard ferruginous bauds. The sandstones on the hills in this 
neighbourhood have generally this somewhat open texture, which is not usually seen in 
ravine sections, and may be duo to the washing out of the decomposed felspar from between 
the grains of quartz. The character of the sandstone is that of the Kamthi beds, but no 
typical Kamthi rocks occur, neither vitreous sandstone, nor the Ted and yellow compact shale, 
nor the fine micaceous variegated sandstone. 
From these hills, others formed of similar sandstone stretch away to the southward, 
bordered to the east in the valley of the Machimangu stream by metamorphics, no Talchirs 
intervening. 
(To he continued). 
ACCESSIONS TO LIBRARY. 
From 1st July to 30th September 1871. 
Titles of Books. Donors. 
An account of the organization and progress of the Museum of Comparative Zoology at 
Harvard College, in Cambridge, Mass, (1871,) 8vo., Cambridge. 
Director of the Museum. 
Barbut, James. —The Genera Vermium exemplified by various specimens of the animals con¬ 
tained in the orders of the Intestina and Mollusca Linnaei, (1783,) 
4to., London. 
„ „ The Genera Vermium of Linnaeus exemplified by several of the rarest and 
most elegant subjects in the orders of the Testacea, Lithophyta, and 
Zoophyta Animalia, (1788,) 4to., London. 
Barbande, Joachim. —On the Primordial Fauna and the Taconie System, with additional 
notes by J. Marcou, (1800.) 8vo., Boston. 
• L. Agassiz, Dir., Mus. Comp. Zool., Harvard Coll., Mass. 
Bastian, H. C.—The modes of origin of Lowest Organisms, (1871,) 8vo., London. 
