LAKES AND RIVERS. 



CHAPTER I. 



MAMMALS. THE WATER-SHREW, THE OTTER, AND THE 

 WATER-VOLE. 



WE shall begin our examination of the fauna of 

 British lakes and rivers with the Mammals, as being 

 the most highly-organized, and therefore meriting 



THE WATER-SHREW. 



most attention. Among these the order Insectivora 

 occupies a prominent place, and there are several 

 familiar examples to be encountered in nearly every 

 stream. There is, for instance, the Water-shrew, 

 whose habits are worthy of careful attention. The 

 Water-shrew (Sorex fodiens, Jennings) is somewhat 



