It is not a condition of life, but life is one of its conditions.

Does it leave the body when life is artificially prolonged in a state of unconsciousness--by hypnotism, for instance?
Is it more closely bound up with animal life, or with intelligence?
If with either, has it a definite abiding place in the heart, or in the brain?
Since its presence depends directly on life, so far as I know, it belongs to the body rather than to the brain.

I once made a rabbit live an hour without its head.

With a man that experiment would need careful manipulation--I would like to try it.

Or is it all a question of that phantom, Vitality?
Then the presence of the soul depends upon the potential excitability of the nerves, and, as far as we know, it must leave the body not more than twenty-four hours after death, and it certainly does not leave the body at the moment of dying.
But if of the nerves, then what is the condition of the soul in the hypnotic state?
Unorna hypnotises our old friend there--and our young one, too.