142 



ELEVENTH ORDINAEY MEETING. 



Royal Institution, 22iid March, 1858. 

 The Eev. H. Hiqgins, M.A., Sen. V.P., m the Chair, 



Professor Archer referred to recent valuable gifts to 

 the library of the Royal Institution. 



Mr. HlGGiNSON exhibited a specimen of aluminum, and 

 referred to the process of its manufacture. 



The following paper was then read : — 



ON THE FOSSILS OF PERIM ISLAND, IN THE 

 GULF OF CAMBAY. 



By henry DUCKWOETH, Esq., F.G.S. 



Perim is a small island in the Gulf of Cambay, ten 

 miles S.S.E. of Gogo, in lat. 21° 33' N., and long. 72° 28' 

 E. It is one and a half to two miles in length, and a half 

 to three quarters of a mile in breadth. The most 

 elevated point is about sixty feet above high- water mark. 

 From the Kattiawar shores it is separated by a channel 

 five hundred feet in width, and seventy-five fathoms 

 deep. The average depth of the Gulf to the north and 

 elsewhere, is about fifty-five fathoms. There is a tradi- 

 tion current among the inhabitants of Gogo that Perim 

 was originally lanited to the main land by means of a 

 stone bridge. This would seem hardly probable, if we 

 take into consideration the width and depth of the inter- 

 vening channel at the present day; though certainly 

 there are appearances which, independently of the geolo- 

 gical evidence hereafter to be adduced, and which I 

 think conclusive, would justify the supposition that at 

 some very distant period there may have been a natural, 



