PRO! ice MK.VA I. 



ust tin- most favourable of south walls, a waste 



of time ;iiid trouble. 



Milt it 1^ extremely important t<> note that the 

 1 nature remaining tin- same, if the pi<> 

 duee dors not satisfy the gardener, it ma\ 

 l>o made to approach his ideal more closek. 

 Although the struggle for existence may be at 

 cinl, the possibility of progress reniains. In dis- 

 cussions on those topics, it is often strangrh 

 forgotten that ti utial conditions of -the 



nioditication, or/evolution, of living things art- 

 variation an.l lu-rcilitary transmission. SeWtiun 

 is the means by which certain variations an 

 tavouivtl and their progeny preserveil. But the 

 struggle for existence is only one of the means 

 by which selection may be effected. The endless 

 varieties of cultivated flowers, fruits, roots, tubers,\ 

 and bulbs are not products of selection by means 

 of the struggle for existence, but of direct selec- 

 tion, in view of an ideal of utility or beauty. 

 Amidst a multitude of plants, occupying the same 

 station and subjected to the same conditions, in 

 the garden, varieties arise. The varieties tending 

 in a given direction are preserved, and the rest 

 are destroyed. And the same process takes place 

 among the varieties until, for example, the wild 

 kale becomes a caliliage, or the wild ]'iln 

 a prize pansy. 



