TRANSACTIONS OF THE SECTIONS. 69 



from a deposit of Wealdeu wliicli previoiisly existed near this district, and have 

 been deposited in this bed subsequently to its destruction by denudation. 



We see, then, that the fossils contained in this deposit consist of some coeral with 

 its formation, and of organic remains derived from the denudation of the Wealdeu 

 and of the Kimmeridge and . Oxford Clays: and thus its further study will 

 no doubt serve to elucidate a series of very interesting and important geological 

 changes. 



Notes on the Fhysical Features of the Land as connected with Denudation. 

 By A. B, WxifNE, F.G.S., 4-0. 



The author called attention to a prevailing sameness of character generally 

 obsen-able in physical featm-es — the results of denudation, arguing therefrom a 

 imiformity in the action of the natural causes which produced them. Ground forms 

 in England, Ireland, Africa and India were cited as instances to prove similarity of 

 results, depending iipon denuding agencies having been exerted upon rocks of similar 

 kinds or in similar relative positions with regard to their strata, notwithstanding 

 differences of climate, glaciation, rainfall, &c. 



The effect of rain and atmospheric weathering was alluded to, and also that variety 

 of denudation produced by the sea, to which, for want of a more apparent cause, 

 the formation of plains was attributed. The difficulty of reasoning upon questions 

 of general denudation from examples occun-iug in countries where atmospheric 

 agencies included the complex actions of both rain and ice, was adverted to ; and 

 the conclusion arrived at was, that although the sea may have done much towards 

 eating into the land, the atmospheric agencies which ha^•e been in operation ever 

 since land first rose above the sea, even in the earliest geological periods, and down 

 to the present time, must be admitted to have performed a most important part, 

 if not indeed the chief results, in obliterating former traces of marine action, and 

 giving to the land the varied physical forms which it now presents. 



BIOLOaT. 



On the Dentition of the Common Mole (Talpa Europaea). 

 Bi/ C. Spence Bate, FM.S. 



On the Rhisopodal Fauna of the Hebrides. 

 Bij Heney B. Beadt, F.'L.S., F.G.S. 



The author stated that he proposed only to supplement the Eeport on the 

 Hebrides dredging, just read by Mr. Jeffreys, by a few remarks on the Forami- 

 nifera which had been found amongst the dredged sands, and to note the occur- 

 rence of certain interesting forms, either new or not before recorded from any 

 British habitat. As the examination had not been completed, details were neces- 

 sarily left to a future paper. 



Of the family MilioUda one important addition had been made to the British 

 list : viz., Hauerina cotnpressa, d'Orb., a species rarely met with in a recent state, 

 but well known as a tertiary fossil. Three or four specimens had been found in 

 one of the deeper dredgings. 



The abundance and variety of the arenaceous forms belonging to the Lituolidce 

 was perhaps the most striking feature in connexion with the Ehizopoda of the 

 area dredged ; and their investigations had led to some modification of the views 

 hitherto held as to the relationship of the genera. All the previously known 

 British species had been foimd, as well as three not before noticed on our shores, 



