slight current of wind which blew against that side of the shed and rose
up it. The bird remained there suspended with outstretched wings, resting
on the up-current as if the air had been solid, for some moments. He rode
there at anchor in the air. So buoyant is the swallow that it is no more
to him to fly than it is to the fish to swim; and, indeed, I think that a
trout in a swift mountain stream needs much greater strength to hold
himself in the rapid day and night without rest. The friction of the
water is constant against him, and he never folds his fins and sleeps.
The more I think the more I am convinced that the buoyancy of the air is
very far greater than science admits, and under certain conditions it is
superior to water as a supporting medium. Swift and mobile as is the
swallow's wing, how much swifter and how much more mobile must be his
eye! This rapid and ever-changing course is not followed for pleasure as
if it were a mazy dance. The whole time as he floats, and glides, and
wheels, his eye is intent on insects so small as to be invisible to us at
a very short distance. These he gathers in the air, he sees what we
cannot see, his eyes are to our eyes as his wings are to our limbs. If
still further we were to consider the flow of the nerve force between the
eye, the mind, and the wing, we should be face to face with problems
which quite upset the ordinary ideas of matter as a solid thing. How is
it that dull matter becomes thus inexpressibly sensitive? Is not the
swallow's eye a miracle? Then his heart, for he sings as he flies; he
makes love and converses, and all as he rushes along--his hopes, his
fears, his little store of knowledge, and his wonderful journey by-and-by
to Africa. Remember, he carries his life in his wings as we should say in
our hands, for if by chance he should strike a solid object, his great
speed renders the collision certain death. It stuns him, and if he
recovers from that his beak is usually broken so that he must starve.
Happily such accidents are rare. The great rapidity of a bird's heart
beating so fast seems to render it peculiarly susceptible to death from