THE AGE OF THE LAST UPRISE OF THE BRITISH ISLES. 195 



Waterford in Ireland, were not contemporaneous with the rise of 

 the land in Scotland and the north of Ireland 1 



Mr. Kouse asked if the high beaches, indicating a submergence of 

 some 1,200 feet, were scanty. I presume he means that since then 

 they have only been of rare occurrence here and there. 



Mr. Martin Rouse. — No, sir, I meant thinner. My line of 

 thought was that if there were a submergence and a rapid fresh rise, 

 then there would be little time for deposit. The deposit would be 

 much thinner in the centre. 



The Secretary. — No, the beach in Moel Trefaen, North Wales, 

 is of considerable thickness. I have not examined it myself, but I 

 believe some of those beaches have 1)een illustrated in the Journal 

 of tlie Geological Socidi/, and I think the thickness of some is 15 feet 

 or 20 feet of gravel with marine shells of still existing species. 



I accept Mr. Rouse's statement that the Romans never did occupy 

 Norway, and I am much obliged to him for the correction. A young 

 lady with whom I am acquainted made the same statement to me, 

 and I asked her how she knew it ; she said it was very well known 

 that they did not. However, I do not think that invalidates what 

 I have said as regards intercommunication with Scotland. 



Professor Lol:>ley referred to the sunken forest in Cheshire, with 

 which he is acquainted. I know of one in the West of Ireland, in 

 county Mayo, and another in county Waterford (Tramore Bay), a 

 most remarkable instance, in which the process of subsidence may have 

 been going on j^ctri jmssu with that of elevation. I do not think the 

 one is antecedent or subsequent to the other. I recollect making 

 that very statement to Professor Phillips at a meeting of the British 

 Association, and I remember his illustrating the process by a 

 movement of his arm — one part of his arm going up and the other 

 going down. 



I doubt very much if there has been any movement of the least 

 importance to the British Islands since the movements to which my 

 paper refers. 



Professor Orchard. — I asked Professor Hull if he could give a 

 definite line of demarcation between the Stone Age and the Iron 

 Age, and whether he could attribute it to any particular cause. 



The Secretary. — Yes, I had forgotten that. Do you mean a 

 date in years 1 



Professor Orchard. — Within a hundred years. 



