1 88 MINUTE MARVELS OF NATURE 



while the weapons are brought into play. The 

 whole of these delicate yet strong weapons can 

 be closed up within the outside sheaths, and thus 



Fig. 123. Another view of the gad-fly's mouth 

 showing the large lower lip 



form a tiny tube of surgical ins'ruments that is 

 barely visible to the human eye. 



This voracious insect is by no means indifferent 

 to man, though he prefers the brute creation. 

 Not long ago, whilst fishing, a member of this 

 family of flies alighted on the hand in which I 



