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hereafter, Mr. Broderip, our Vice-President, has appended a Table, 

 showing the situation and depth at which the different genera of shells 

 are found in seas and estuaries. The importance of such a table, 

 though professedly incomplete, must be evident to you all ; and I hope 

 we shall receive from the same quarter further proofs of the advantage 

 which our science is capable of receiving by allying itself with prac- 

 tical zoology. One of my predecessors has adverted to various cir- 

 cumstances which may determine different fossils to different loca- 

 lities, producing an abundant supply in one place, and a comparative 

 dearth in another. In this point of view, Mr. Broderip's table will 

 be found of great use. By referring to it we discover at once what 

 genera in the present creation are confined to shallows; what genera 

 are to be expected at depths varying from a few feet to three or 

 four hundred, and even more: which are those that attach them- 

 selves to marine plants, drifted wood, coral, Crustacea, loose stones, 

 or rocks ; perforate the shells of other animals, coral, wood, or are- 

 naceous and calcareous deposits ; or dwell on beds of mud or sand. 

 A knowledge of the habits of recent Testacea must materially assist 

 our investigations into the habits of corresponding fossil genera. 



The Geographical Range of difi^erent fossil Animals is a subject of 

 great interest, coinciding as it must do with the range of those con- 

 ditions which were essential to their birth and preservation. To 

 Col. Sykes we are greatly indebted for bringing under our notice a 

 Collection of fossils made by Captain Smee in the district of Cutch. 

 On comparing these remains with the fossils of the oolitic series in 

 England, we observe, not without surprise, that one agrees in 

 every respect with the Gryphaa dilatata-, that another agrees equally 

 with the young shell of Trigonia costata, that a third bears a close 

 resemblance at least to the Ammonites Harveyii, while others are 

 identical with the Ammonites Wallickii, which is found in the range 

 of the Himalaya. I hope the interest which these species have ex- 

 cited will lead to a more extended investigation of the tract from 

 which they were procured. 



Among the illustrations which will accompany a Geological Ac- 

 count of Gurhwal and Sirmou, drawn up by Mr. Royle, is a plate 

 representing certain Shells collected by Mr, Gerard in the elevated 

 valley of the Spiti ; these shells may also be identified generically 

 with those of the secondary formations in Europe. Besides these, 

 are given the head and teeth of a small species of Deer, and the 

 tooth of a Rhinoceros, obtained by Messrs. Webb and Trail from 

 the lofty region on the north of the Snowy IVJountains ; and several 

 teeth of a carnivorous animal, a saurian, and fish, discovered by 

 Mr. Cauntly at the southern base of the Himalayan chain. 



A list of Fossils found in the Lias of Yorkshire by Mr. Williamson, 

 jun. of Scarborough, will be valuable to us as a local monograph, 

 and still more so as a type to which we may refer the fossils of 

 the same formation in other parts of the country. The author 

 is of opinion that every particular layer is characterized by pe- 

 culiar organic remains, a statement which must be received with 

 caution ; it may be true where the district examined is very small, 



