When he wished further to know how, and of what ingredients the human
blood was made, the old lady laughed, and replied lightly that it was
red, and more than that she had not learned from the "Schoolmaster with
the Children," from which she had acquired all that she knew.

Then the doctor cried: "And so my hard-earned discovery is of less value
than I hoped!"

But these words had scarcely escaped him before he smiled to himself, for
it was the elixir that had forced him to this outbreak, otherwise he
would never have confessed to any one, be he who be might, that his
wonderful discovery was in any way incomplete.

Being satisfied with his experiences for that day he no longer hindered
the old lady from going to rest.

On his own bed he lay and pondered over the limitations of his discovery.

To reveal the truth, wholly and absolutely, was not within the power of
the elixir, nor unfortunately did it possess the efficacy to lead one to
a perfect knowledge of oneself; on the other hand it was capable of
forcing any one who used it to be absolutely honest in his dealings with
his neighbours, and that surely was no small gain. Indeed it was enough
to place him among the most famous discoverers in all ages, and to
inscribe his name beside those of the noblest benefactors of man in the
whole round world.

Sleepless, yet filled with triumphant joy, like a general who has won a
glorious victory, he watched through the night. When Frau Schimmel came