Scale of Miles 



SPREAD 



or TWE v 



COMMON SQUIRREL 



THE SPREAD OF THE COMMON SQUIRREL IN SCOTLAND FROM VARIOUS 

 CENTRES OF INTRODUCTION, Showing the influence of valleys on dispersal. 



Cj Centre of introduction and subsequent dispersal. DxG Centre of supposed natural resuscitatio 



LJ Introduced but subsequently died out. ..Approximate boundaries of areas colonized fro 



each centre of introduction. The approximate dates of introduction and arrival at different localities a 



indicated. 



