There are so many of these little nerves in the flesh and skin that we cannot put the finest needle into the flesh without hurting some of them.
~11.

The Use of Pain.~--It is not pleasant for us to have pain, but if the nerves gave us no pain when we are hurt we might get our limbs burned or frozen and know nothing about it until too late to save them.
~12.

Nerves of Feeling.~--We have different kinds of nerves of feeling.
Those we have learned about feel pain.

Others feel objects.

If you take a marble or a pencil in the hand you know what it is by the feeling of the object.