NOTES OX THE THICKNESS OF THE LUCERNE GLACIER, ETC. 293 



8. Retardation of the ice on the angle formed hy the Seelisherg. — This 

 subject has been ah-eady considered under No. 5. 



9. Extendon of the lleuss glacier. — We are told that this glacier 

 extended as far as Coblenz on the Rhine, and we may well believe 

 that it was there simply merged in the mass of the Rhine glacier, 

 which appears to have been bounded on the north by the granite 

 hills of the Black Forest. It is only by tracing its moraines that 

 the individuality of a glacier could be shown in the midst of the 

 huge sea of ice, which must have, more or less, filled the central 

 valley of Switzerland during the period of maximum glaciation. 



I think those are the principal points that I wish to make, and it 

 has given me great pleasure to have been able to make them. 



Mr. Martin Rouse. — Did you say that the Jurassic rested on 

 the Eocene ? 



Mr. HuDLESTON. — Yes, that is so in the case of the Mythen. 

 The Secretary. — And there is isolation ? 

 Mr. HuDLESTOX. — Yes. 



The Chairmax. — "What is the meaning of the term " Mythen " 1 

 Mr. HuDLESTOX. — I cannot say. 



The Chairmax. — There is something mythical about it, 

 perhaps. 



Professor LoGAX Lobley, F.G.S. — I have listened with much 

 interest to Professor Hull's paper which, though short, as Mr. 

 Hudleston says, is very effective. I have also listened with very 

 great interest to the notes containing the valuable and interesting 

 remarks by Mr. Hudleston, who knows the district exceedingly 

 well. He has dealt with the local features so adequately that I 

 think it would be unnecessary for me to say anything further about 

 them. The great features which we see displayed by that map 

 have been explained as it is only possible they can be explained. 

 The series of longitudinal valleys and transverse valleys are very 

 marked in the Swiss area. If you looked down on that model of 

 Switzerland, which existed some little time ago in the Museum of 

 Practical Geology, but which I regret to say is not there now, you 

 could see those longitudinal valleys and transverse valleys with 

 very great distinctness. 



One point Mr. Hudleston referred to which is very well 

 illustrated in this country, not far from where we are, and that is 

 the cutting open of the river gorges ;pari passu with the raising of 



