FREE BOOKS

Author's List




PREV.   NEXT  
|<   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   76   77   78   79   80   81   82   83   84   85   86   87   88   89   90   91   >>   >|  
again. SENSE OF DIRECTION It has been supposed that animals possess also what has been called a Sense of Direction. Many interesting cases are on record of animals finding their way home after being taken a considerable distance. To account for this fact it has been suggested that animals possess a sense with which we are not endowed, or of which, at any rate, we possess only a trace. The homing instinct of the pigeon has also been ascribed to the same faculty. My brother Alfred, however, who has paid much attention to pigeons, informs me that they are never taken any great distance at once; but if they are intended to take a long flight, they are trained to do so by stages. Darwin suggested that it would be interesting to test the case by taking animals in a close box, and then whirling them round rapidly before letting them out. This is in fact done with cats in some parts of France, when the family migrates, and is considered the only way of preventing the cat from returning to the old home. Fabre has tried the same thing with some wild Bees (Chalicodoma). He took some, marked them on the back with a spot of white, and put them into a bag. He then carried them a quarter of a mile, stopping at a point where an old cross stands by the wayside, and whirled the bag rapidly round his head. While he was doing so a good woman came by, who seemed not a little surprised to find the Professor solemnly whirling a black bag round his head in front of the cross; and, he fears, suspected him of Satanic practices. He then carried his Bees a mile and a half in the opposite direction and let them go. Three out of ten found their way home. He tried the same experiment several times, in one case taking them a little over two miles. On an average about a third of the Bees found their way home. "La demonstration," says Fabre, "est suffisante. Ni les mouvements enchevetres d'une rotation comme je l'ai decrite; ni l'obstacle de collines a franchir et de bois a traverser; ni les embuches d'une voie qui s'avance, retrograde, et revient par un ample circuit, ne peuvent troubler les Chalicodomes depayses et les empecher de revenir au nid." I must say, however, that I am not convinced. In the first place, the distances were I think too short; and in the second, though it is true that some of the Bees found their way home, nearly two-thirds failed to do so. It would be interesting to try the experiment again, taking the Bees say five m
PREV.   NEXT  
|<   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   76   77   78   79   80   81   82   83   84   85   86   87   88   89   90   91   >>   >|  



Top keywords:

animals

 

taking

 
interesting
 

possess

 

whirling

 

rapidly

 

experiment

 

carried

 

suggested

 

distance


demonstration
 
suffisante
 
average
 

practices

 

Satanic

 

opposite

 
direction
 

suspected

 

solemnly

 

failed


circuit
 

peuvent

 

distances

 

avance

 

retrograde

 

revient

 

troubler

 

Chalicodomes

 

convinced

 

depayses


empecher
 

revenir

 

enchevetres

 

rotation

 

thirds

 

decrite

 

traverser

 

embuches

 

Professor

 

obstacle


collines
 

franchir

 

mouvements

 

Chalicodoma

 

brother

 
Alfred
 

faculty

 

ascribed

 

homing

 

instinct