STABILITY 37 
instinctive, and even the niceties of adjustment 
that he has to learn must become through habit 
almost automatic. And the result of it all—of his 
fine build, his instinct, and his art—is the perfect 
stability of the machine; a thing to make the most 
skilful aviator envious: for who ever heard of a 
bird losing his balance and falling to the ground ? 
There are, of course, trials to which he may prove 
unequal. He may lose his way in a cloud, become 
exhausted when crossing a wide stretch of sea, or 
even fly stupidly into a telegraph wire. But an 
accident from want of balance would be evidence 
of morbid condition. 
