212 W. BLANl'OED; WESTERN INDIA. [PaRT II. 



Gulf of Cambay for the purpose of endeavouring to ascertain if the 

 beds there existing, which, from their Mammalian fauna, are considered 



^, . „ . of miocene age by Falconer, presented any marked 



Object of visit to Perim. & J" >i J 



resemblance to the upper beds in the Oomra- 



wuttee, Keem, and Taptee rivers, described in the preceding pages. 



Although the beds of Perim have been well described by several previous 



observers (see ante p. 6, &c.), a brief account of them in this place may be 



useful for comparison with the rocks to the eastward. 



Perim Island lies off the coast of Kathiawar near Gogo, and 



Position of island and ^^'^^^^ opposite to the mouth of the Nerbudda. 

 general character. j^ ^^ ^^^^^^ ^ j.ggf ^f rock, " covered, in part, by 



blown sand, and, at high water, about 1 ^ miles long and barely half a mile 

 broad, but far more extensive at low water. The greatest length is 

 nearly from north to south (north by west to south by east), and the 

 ridges of blown sand near the light-house on the west side of the island 

 are nearly parallel to this (they run north 20 east-south 20 west). 



The rocks are best seen close to the southern extremity. The reef, 



dry at low water, and running out for a consider- 

 Eocks of island. 



able distance on all sides of the island, is com- 

 posed of irregular interstratifications of conglomerate and sandy clay. 

 The sandy clay, best seen in the little cliff at the south end of the 

 island, sections of which are given by Ethersey and Fulljames, is a thin 

 bedded light grey sandy silt, abounding in " kunkur,^^ the carbonate of 

 lime in which may be derived from the overlying conglomerate. These 

 silt beds closely resemble those seen in the Taptee near Gulla, those in 

 the Ruttunpoor section, &c. The conglomerates belong to two forms, 

 very distinct in appearance, but both containing bones. 



That most prevalent is an extremely coarser ock, made up of rounded 

 blocks of sandstone, varying from 3 feet in diameter downwards, but 

 mostly not exceeding a foot, and very irregularly shaped. The sandstone 

 is generally of fine texture, and grey or light brown in colour. 



( 374 ) 



