Chap. I.] 



THE BOIS DE BOULOGNE. 



17 



other cases. The temperature, moisture, air, etc., given to houses 

 of exotic plants of various classes would perfectly suit various 

 forms of animal life difficult to preserve in good health in cold 

 northern countries. The interest and beauty of both the animal 

 and vegetable kingdom might be heightened by such a mixed 

 arrangement as we speak of, tastefully and judiciously carried 

 out. The economy resulting from adapting the same structures 

 and heating power to the wants of both the animal and vegetable 





Weeping Beech on Sloping Bank of Island. 



treasures would permit of fuller justice being done to each. In 

 cities rich enough to afford first-class separate establishments, this 

 proposal in its entirety would not so readily commend itself. But, • 

 however objectionable it might seem to introduce zoological 

 elements into the botanic garden, there would be no two opinions 

 as to the good of adding all the charms of vegetation to the 

 zoological garden. In small cities with only one zoological or 

 botanical garden it would be easy so to arrange the two matters 



