266 Forbes on Cretaceous Fossils from Southern India. 



viz. that ike range of the geographical distribution of species is usually 

 correspondent to the range of their distribution in time. 



The probability of the proposed law, that the marine fauns of 

 distant localities, under similar conditions of climate, depth, and sea- 

 bottom, maintain their relations ratfi£r by the representation of forms 

 by similar forms, than by identity of species, is also borne out by the 

 examination of these collections. 



These inferences can be only pat forth as provisional, until a 

 thorough examination of the deposits described by Mr. Kaye in their 

 stratigraphical relations be made, and the fossils of those localities 

 which he did not visit have been still 1 , further examined on the spot. 

 To the palaeontologist his collections are invaluable, as the specimens 

 are in so fine a state of preservation, as to permit of an examination 

 of their minute structure. 



The descriptions of fifteen of the Truiconopoly species in the cata- 

 logues were furnished to Mr. Kaye by JVIr. George Sowerby. 



[Note. — With regard to this report, it was also intended that it should have been 

 accompanied by a descriptive catalogue of the fossils, and by figures of new species, 

 and it is in so far, therefore, incomplete. It is published in this place as an indi- 

 cation of the important results actually arrived a.t by the study of these interesting 

 fossils. — Ed.] 



On the Permian System as developed in Russia and other parts of Eu- 

 rope. By Roderick Impey Murchisoivt, Esq., F.G.S., V.P.R.S., 

 andM. E. de Verneuil, Hon. Mem. Geo. Soc. of London. 



(From the Quarterly Journal of the Geological Society, No. 1.) 



On the part of his associates, M. de Verneuil and Count Key- 

 serling, and himself, Mr. Murchison has previously explained in the 

 Proceedings of the Geological Society the nature of the various depo- 

 sits which constitute the subsoil of European Russia. As in all 

 other parts of the world which have been adequately examined, 

 the Silurian rocks are those which contain the earliest forms of ani- 

 mal life, and in Russia they are overlaid fry Devonian and carboni- 

 ferous deposits, each of which is there singularly well defined by 

 its organic remains and regular superposition.. 



