1825.] Proceedings of Philosophical Societies. 223 



The results of these experiments were communicated by Mr. 

 Daniell to Prof. Renwick, who had the goodness to send me 

 another specimen of TorreHte, and I received at the same time a 

 copy of his analysis, pubhshed in the work already alluded to. 



The results which I had obtained differing so much from 

 those of Prof. Renwick, I considered it due to that gentleman 

 to resume my labours, and I accordingly repeated his analysis 

 on a portion of the mineral he had so liberally and obligingly 

 furnished me with. 



To my surprise, I was as unsuccessful as before in my attempts 

 to discover any oxide of cerium. I therefore requested Mr. 

 Faraday to have the goodness to examine a portion of the mine- 

 ral, who informs me that he also has been unable to detect in it 

 any trace of the oxide in question. To whatever cause it may 

 be owing, therefore, I am compelled to conclude that some error 

 has crept into Prof. Renwick's analysis, and that oxide of cerium 

 forms no part of the constituent ingredients of Torrelite. 



It may be right to add, that both mine and Mr. Faraday's 

 experiments were made on the dull vermillion red portion of the 

 mineral. J. G. C. 



Article IX. 



Proceedings of Philosophical Societies. 



ROYAL SOCIETY. 



Jan. 27. — The name of the Solicitor-General was ordered to 

 be inserted in the printed lists of the Society ; and a paper was 

 commenced, On the Anatomy of the Mole-Cricket ; by John 

 Kidd, MD. FRS. 



Feb. 3. — The reading of Dr. Kidd's paper was concluded ; 

 and an Appendix to the Croonian Lecture, by Sir E. Home, Bart. 

 VPRS. read, announcing the simultaneous discovery by himself 

 and Mr. Bauer, of nerves in the human navel-string and pla- 

 <;enta, drawings of which by Mr. B. were annexed to the paper. 



Feb. 10. — Lord Viscount Strangford, and the Rev. George 

 Fisher, MA. were admitted Fellows of the Society; and a paper 

 was read, of which the following is a brief abstract : — 



Notice of the Iguanodon, a Fossil Herbivorous Reptile found 

 in the Sandstone of Tilgate Forest; by Gideon Manteil, FLS. : 

 communicated by Davies Gilbert, Esq. VPRS. 



In the sandstone of Tilgate Forest, near Cucktield, in Sussex, 

 which belongs to the iron-sand formation, and forms part of a 

 chain of hills extending from Hastings to Horsham, are found 

 the teeth and a few of the bones of the subject of this paper, 

 together with those of a gigantic species of crocodile, of the 

 megaloKaurus and the plesiosaurus, and the remains of turtles, 



