48 Geological Society. 



of Fermat's tlieorem suggested this extension of Sir John Wil- 

 son's to me, so I concluded that had this extension of Wilson's 

 been known to the world it would naturally have suggested his 

 to Horner. No acknowledgement of this kind having been 

 made, I took it for granted that the theorem I gave was new. 

 Undoubtedly had Mr. Horner been aware of Gauss's theorem 

 he would have made mention of it. My acquaintance with 

 Gauss's principle has not been derived from the study of his 

 works, but from a casual statement of it in an English work, 

 " Dynamics," by Mr. Earnshaw, of St. John's College, Cam- 

 bridge. 



XIII. Proceedings of Learned Societies. 



GEOLOGICAL SOCIETY. 



Nov. 7, 1838. — A paper was first read, On some Fossil Remains 

 of Pal?eotherium,Anoplotherium, and Chaeropotamus, from the fresh- 

 water beds of the Isle of Wight, by Richard Owen, Esq., F.G.S., 

 Hunterian Professor in the Royal College of Surgeons. 



Some years previous to 1825, Mr. Thomas Allan, of Edinburgh, 

 found in the freshwater beds at Binstead in the Isle of Wight, a tooth 

 which was subsequently determined by Mr. Pentland, to be a molar 

 of the Anoplotherium commune* ; and in 1830, Mr. Pratt found in 

 the same quarries teeth of one species of Anoplotherium and of two 

 species of Paleeotherium t ; and thus the freshwater strata of the 

 Hampshire basin were proved to contain remains of some of the Pa- 

 cliydermata which had been discovered in the gypsum quarries of 

 Montmartre. 



The specimens described by Mr. Owen in this paper were col- 

 lected by the Rev. W. Darwin Fox, at Binstead and Scafield ; and 

 being numerous and well preserved they have enabled the author to 

 establish a still greater agreement in the remains of the two locali- 

 ties. Of the genus Palaotherium, the collection contained teeth 

 and bones of P. medium, P. crassum, P. ciirtum ? and P. mimts ; 

 and of the genus Anoplotherium, teeth of A. commune and A. sccun- 

 darium. 



The most important specimen, however, in the collection is a right 

 ramus of the lower jaw of the Cha^ropotamus, wanting only one false 

 molar, a small portion of the symjAysIs, and the top of the coronold 

 l)rocess. 



This genus was established by Cuvler from an imperfect fragment 

 of the base of the skull, with six molar teeth on each side, and a 

 small portion of a ramus of the lower jaw with the canine ? and two 

 spurious molars. He nevertheless proved from the form of the teeth, 

 the glenoid cavity, and the zygomatic arches, that the animal be- 

 longed to the Pachydermata and was most nearly allied to the Pec- 



• See a paper by Dr. Bucldand, Annals Phil. New Series, vol. x, p. 3G0. 

 + Geological Transactions, Sec. Ser., vol. iii. p. 451. 



