Acclimatisation. 
[April, 
210 
unbounded. Not a few of the 
n“^’ d tTeymultiplied in a manner 
Herpvith is connefted a ^‘° u u S ,. a f siancontine nt have a 
mucff greater tendency to beco^ne cosmopoman than have 
reached Califoinia, Australia, an . t displacing the 
become wild, and are to a lamentable ex *nt ^sp ac * 
native vegetation. But the instances of an Amenc J ^ 
having become naturalised in a y P Australian 
ceedingly rare And so an think that no^ 
plant has established itse _ which I must take the 
tion. In explanation of this < , sa -^ t ^at the flora 
liberty of calling an unpleasant one, it d j 
°o f f » “ d r 
pknet^Forms which have emerged 
contest have naturally g |ea . Australia of New 
Snd,or e“"n rf Ami" Ve^v similar is the’ case with 
“swings us to another side of acclimatisation^ when 
we introduce into any country an a len f au na 
animal we have not srmply the old flora mthe a ^ 
[S^peJ in the annna, ^^table^ation 
of the country. Each new plant hat can ma.nt 
the struggle for ex.stence, and leads to the ext., pa 
The^ thougMessiy^Letrttem 
figh VedTn’.h a e n tt™Vgle e [ofexTsTence are not the most beau- 
SS e oft re most us g eful.-often quite the contrary., It seems 
highly probable that though . " natural se up to a 
certain pent is ekeeded its aftion is 
X'aS«. In like manner, if competition between 
