62 THE IMITATION, IN CLOSED CASES, OF 
Himalayas,” a striking example of this kind. “ To 
show the effects of protection and culture, Xan- 
thochymus dulcis may he adduced as a remarkable 
instance. This tree, which is found only in the 
southern parts of India, and which would not live 
in the more exposed climate of Saharanpore, 
exists as a large tree in the garden of the King of 
Delhi ; hut here, surrounded by the numerous 
buildings within the lofty palace wall, in the 
midst of almost a forest of trees, with perpetual 
irrigation from a branch of the canal which flows 
through the garden, an artificial climate is pro- 
duced, which enables a plant even so sensible of 
cold as one of the Guttiferce , to flourish in the 
open air of Delhi, where it is highly prized, and 
reported to have milk thrown over its roots, as 
well as its fruit protected from plunder by a 
guard of soldiers.” The comparative stillness of 
the atmosphere surrounding a plant thus shel- 
tered, has, doubtless, its effect in enabling it to 
bear the cold. Supposing ourselves in a hot and 
dry country, let us see what may be done by sur- 
rounding our plants with glass, and lowering the 
temperature, if requisite, by means of the evapo- 
ration of water from the external surface. We 
shall be enabled in this manner, as with the wand 
of a magician, to turn a desert into a paradise. 
Such cases cannot be better described than by 
