Hoj/al Socictij, 141 



of Cidaris vagans, murlcated spines, and joints of a 

 Penlacrinites 8 ft. 



This bed Mr. Williamson appears to consider peculiar to the lo- 

 calities mentioned, not having observed it elsewhere. 



He afterwards describes the upper beds of the Great Oolite at the 

 south point of Cay ton Bay. Immediately above the nodular iron- 

 stone bed is a very thick series of sandstones and shales surmounted 

 by a seam of argillaceous oolite, containing Av'icula Braamburiensist 

 and similar to that which forms the top of the Great oolite at White 

 Nab (No. 6. of the section), with the exception that the nodular iron- 

 stone is wanting. This system of sandstone and shale, considered 

 by Mr. Phillips to belong to the upper marl and sandstone, is, in Mr. 

 Williamson's opinion, a distinct and merely local deposit included 

 in the superior division of the Great oolite. It contains most of the 

 fossil plants assigned by Mr. Piiillips to the upper marl and sandstone, 

 and several which are new and peculiar to it. Aii ascending sectional 

 list is given of this deposit, commencing with the 1 foot bed of irony 

 nodules, and passing through 35 feet of alternations of shale, with 

 ferruginous and other sandstones, ends in the seam of argillaceous 

 oolite, which is said to be overlaid by the upper sandstones and shales. 

 One of the beds of shale contains a vast number of plants, amounting 

 to above 40 species. The following list is given by Mr. Williamson : 



Pecopteris lobifolia, P. insignis, P. nnJans, P. polypodioides, P.projnnqua, 

 P. Williamsonis, P. acuti folia, P. obtusifolia, P. denfata, P. exilisy P. cce- 

 spiiosa, Neuropteris recentior, N. Hgata, N. arguta, Sphenopteris stipata, 

 S. Williamsonis, Cyclopteris digitata, Glossopieris Phillipsii, Tcsniopieris 

 vittatu, T. major, Solenites Murrayana, Lycopodites Williamsonis, Sphtsridia 

 paradoxa, Pterophyllum comptum, P. Pecten, P. minus, Otojiteris cuneata, 

 0. Beanii, Ctenis falcata, JDictyophyllum rugosum, Cycadites tenuicaulis. 



Two shells are occasionally found in these beds, and are considered 

 by the author to be allied to the genus Anodon. 



In conclusion, Mr. Williamson says, that the characteristic shells 

 of the Great oolite are few, as they bear a general resemblance to 

 those of the cornbrash and inferior oolite. 



ROYAL SOCIETY. 



Address of His Royal Highness the President^ delivered at the 

 Anniversarif Meeting, Nov, 30, 1836. 

 Gentlemen, 

 I APPEAR before you, after an absence of two years from this 

 chair, under circumstances which deeply affect my feelings. I have 

 been secluded, during nearly the whole of that period, from the 

 active business of life and of society, by the slow but sure ap- 

 proaches of almost total blindness ; by preparations for a most de- 

 licate and, to me, most important operation, and by the precautions 

 which were necessary to accomplish my recovery, after it had been 

 most skilfully and successfully performed. In resuming now, there- 

 fore, my public duties in this place, I feel sensibly the novelty of 

 my situation, as if I were entering, by the blessing of God, upon a 

 new tenure of existence, which, whilst it offers to my view many 



