THE ILLUSTRATION HORTICOLE. 



exhibiting variations or changes in form in some of the 

 organs of the plant. This is a break or disturbance in the 

 mode of existence of the imported species. 



The disturbed subjects, cultivated with especial care, but 

 mainly with the aim of gradually accustoming them as much 

 as possible to the open air, will in their turn produce seed, 

 signalizing another step towards acclimatization. Successive 

 generations may perhaps accomplish it. or at any rate they 

 will give issue (especially if some well directed hybridizations 

 have been brought to their aid.) to hardier varieties that will 

 perpetuate this valuable character, hardiness, and perhaps 

 with it other equally desirable qualities. 



We observe with regret that a great many trials at accli- 

 matization have not succeeded; but in almost all cases, if 

 we look into them, we shall find that it has been because the 

 essential conditions of success were disregarded. We may 

 add. too, that acclimatization, -aid by a many persons to be 

 impossible, has been seriously followed out by very few. 



One part of French territory, the Mediterranean shores, 

 from Toulon to the Italian boundary, is the scene of some 

 interesting acclimatization*. Here may be seen in the open 

 air.and frequently of large size: Livistona australis (Corypha 



I and numerous species of Acacia from the 

 I the Erythrina Crista-GalU from Buenos-^ 



beautiful Cassim- from South America; the If 

 genus Eucalyptus, the trees of the future 

 of Europe; the elegant and beautiful Cimmv. 

 tralia and the Pacific Islands, etc.. otc. 

 All these different plants are naturalized in 1 

 i in a temperature below that of their res 

 countries. They prove that plants as well as ; 

 I sufficient vital power to accommodate themsel 

 | ditions of climate and different muirishine 

 | unitization, we believe, is particularly in 

 | worthy of note in its progress, and as afford 

 j on the question under consideration. Let u 

 I that it is facilitated or rendered possible on 

 j Toulon to Nice by a certain regularity < 

 that prevails, extreme and sudden changes < 

 being very uncommon. The never very rigc 

 I gradually and slowly ushered in. and gently, b 

 plants become exposed to a low temperat 

 instance Liristouu s,',n,/s;s and L, niistrcl 

 I frost of 5° or 6* Fahrenheit, or even more. 



