FREE BOOKS

Author's List




PREV.   NEXT  
|<   26   27   28   29   30   31   32   33   34   35   36   37   38   39   40   41   42   43   44   45   46   47   48   49   50  
51   52   53   54   55   56   57   58   59   60   61   62   63   64   65   66   67   68   69   70   71   72   73   74   75   >>   >|  
approaching to monsters. This requires consideration,--should be introduced in first chapter if it holds, I believe it does. It is hypothetical at best{62}. {62} Compare _Origin_, Ed. i. p. 41, vi. p. 47. "I have seen it gravely remarked, that it was most fortunate that the strawberry began to vary just when gardeners began to attend closely to this plant. No doubt the strawberry had always varied since it was cultivated, but the slight varieties had been neglected." Nature's variation far less, but such selection far more rigid and scrutinising. Man's races not [even so well] only not better adapted to conditions than other races, but often not <?> one race adapted to its conditions, as man keeps and propagates some alpine plants in garden. Nature lets <an> animal live, till on actual proof it is found less able to do the required work to serve the desired end, man judges solely by his eye, and knows not whether nerves, muscles, arteries, are developed in proportion to the change of external form. Besides selection by death, in bisexual animals <illegible> the selection in time of fullest vigour, namely struggle of males; even in animals which pair there seems a surplus <?> and a battle, possibly as in man more males produced than females, struggle of war or charms{63}. Hence that male which at that time is in fullest vigour, or best armed with arms or ornaments of its species, will gain in hundreds of generations some small advantage and transmit such characters to its offspring. So in female rearing its young, the most vigorous and skilful and industrious, <whose> instincts <are> best developed, will rear more young, probably possessing her good qualities, and a greater number will thus <be> prepared for the struggle of nature. Compared to man using a male alone of good breed. This latter section only of limited application, applies to variation of [specific] sexual characters. Introduce here contrast with Lamarck,--absurdity of habit, or chance?? or external conditions, making a woodpecker adapted to tree{64}. {63} Here we have the two types of sexual selection discussed in the _Origin_, Ed. i. pp. 88 et seq., vi. pp. 108 et seq. {64} It is not obvious why the author objects to "chance" or "external conditions making a woodpecker." He allows that variation is ultimately referable to conditions and that the nature of the connexion is unknown, i.e. that t
PREV.   NEXT  
|<   26   27   28   29   30   31   32   33   34   35   36   37   38   39   40   41   42   43   44   45   46   47   48   49   50  
51   52   53   54   55   56   57   58   59   60   61   62   63   64   65   66   67   68   69   70   71   72   73   74   75   >>   >|  



Top keywords:
conditions
 
selection
 
external
 

struggle

 

variation

 
adapted
 
Nature
 

vigour

 

making

 

chance


sexual

 
nature
 

woodpecker

 

fullest

 
animals
 

characters

 

developed

 

Origin

 

strawberry

 

instincts


skilful

 

vigorous

 

industrious

 

possessing

 

prepared

 
number
 
greater
 

chapter

 
qualities
 

ornaments


species

 

hundreds

 

generations

 

offspring

 

female

 
transmit
 

advantage

 

rearing

 

monsters

 

approaching


obvious

 

discussed

 
author
 

connexion

 

unknown

 
referable
 
ultimately
 

objects

 

requires

 
limited