difficulty in directing
it so as to be able to see the desired object. Even with this small
spy-glass it is very difficult so to direct it as to find a particular
star in the heavens at night. It is not easy, even to find a distant
object upon the earth. But with these wonderful eyes, with which God has
endowed us, you and I can look almost instantly from one star to any
other star, and find instantly upon the earth any object which is
distinctly pointed out to us. It takes a very experienced person
successfully to operate a telescope, but the smallest child can direct
and control and use his own eyes successfully.

The large telescopes have to be turned and adjusted by machinery, and
when it is desired to direct them from one star to another star on the
opposite side of the heavens, they even have to turn around the entire
roof or dome of the observatory. But you and I do not need any ponderous
machinery to adjust our eyes, or to turn them about in order to look in
a different direction. We can easily turn our heads by bending our
necks, or, if necessary, we can turn our entire body around and look in
an opposite direction. In looking from one object to another, our eyes
change their direction so quickly that we are not conscious of any
effort upon our own part.

[Illustration: Small Telescope.]

If you were to look through a large telescope, or even one of these
smaller spy-glasses, you would immediately discover that when you desire
to look at objects at different distances, or in different degrees of
light and shade, you would have to constantly adjust the telescope or
spy-glass to these different conditions. If you would look at objects
which are near, and then turn the spy-glass to look at those which are
distant, you would not be able to see distinctly until you had adjusted
the lenses to suit the distance. With our eyes the same adjustment has
to be made, and yet it is done so quickly and without any conscious
effort upon our part, that it seems as if it were not done at all. When
we look at an object which is only a few inches from our face, and then
turn and look at a distant object, instantly our eyes are adjusted to
the difference of distance and varying degrees of light and shade.

But what makes this all still more wonderful is the fact that we have
two telescopes, two eyes instead of one. Both of these little
eye-telescopes instantly adjust themselves, and both adjust themselves
to precisely the same