iu Europe had made their way so far to the west. Ireland was 

 separated first, and consequently has a more limited fauna than 

 England, whose connection with the continent lasted much longer. 

 This is shown by the fact, pointed out by Mr. Wallace in his 

 "Island Life," that Germany has 90 species of mammals, while 

 Britain has only 40, and Ireland 22. Also Belgium has 22 species 

 of amphibia and reptiles, while Britain has but 13. and Ireland 

 only 4. So that Ireland became separated from us before more 

 than 22 kinds of mammals and 4 kinds of amphibia and reptiles 

 had secured a permanent footing there. 



And so the subsidence continued ; the North Sea crept further 

 south, and the Atlantic worked its way up the Channel, until the 

 two united at the Strait of Dover, and Great Britain became an 

 island. So it has continued ever since. Many minor and local 

 changes have occurred, and are still in progress. We have no 

 grounds for looking upon the present state of things as final, or to 

 imagine that the results of these changes may not be of the same 

 magnitude as those I have attempted to describe. 



The Lecture was illustrated by Lantern Slides, and by a series 

 of maps illustrating the Physical Geography of Great Britain 

 during the Tertiary Period. The Lecture Hall was completely 

 filled, and great interest was shown in the subject. 



November 11th, 1890. 



A combined meeting of the Natural History and the Microscopical 

 Societies was held, and took the form of a Conversazione. A large 

 number of objects were shown ; the attendance was very good. 

 The Secretary was absent through illness. 



The following Societies have arranged to exchange their publica- 

 tions for those of our own : — 



The Scientific Association, Meriden, Conn., U.S. 



The Academy of Sciences, New York. 



The Academy of Sciences, Philadelphia. 



The Elliott Society of Science and Arts, Charleston. 



The Rochester Academy of Science, Rochester, N.Y. 



The Imperial German Academy, Halle-on-the-Saalo. 



The Tunbridge We'ls Nat. Hist. Society. 



The Huddersfield Naturalists' Society. 



The East Kent Nat. Hist. History. 



The Brighton and Sussex Nat. Hist. Society. 



The Eastbourne Nat. Hist. Society. 



The Harrogate Nat. and Scientific Society. 



The Geological Society, Glasgow. 



