210 Proceedings of the Royal Irish Academy. 



they are giving way on the Continent before newer and more 

 vigorous rivals. 



As changes in the frontiers of states on the map of Europe speak 

 to the politician of the varying fortunes of the struggle between races 

 and nations of men, so the ranges of animal species, as traced out 

 by the naturalist, give hints of the progress of the age-long conflict 

 between the myriads of living creatui-es for possession of the land. 



