some crucial question or
other he was at work on, some point bearing on the thought of the time.
For the Master, I have observed, is pretty sagacious in striking for the
points where his work will be like to tell. We all know that class of
scientific laborers to whom all facts are alike nourishing mental food,
and who seem to exercise no choice whatever, provided only they can get
hold of these same indiscriminate facts in quantity sufficient. They
browse on them, as the animal to which they would not like to be compared
browses on his thistles. But the Master knows the movement of the age he
belongs to; and if he seems to be busy with what looks like a small piece
of trivial experimenting, one may feel pretty sure that he knows what he
is about, and that his minute operations are looking to a result that
will help him towards attaining his great end in life,--an insight, so
far as his faculties and opportunities will allow, into that order of
things which he believes he can study with some prospect of taking in its
significance.

I became so anxious to know what particular matter he was busy with, that
I had to call upon him to satisfy my curiosity. It was with a little
trepidation that I knocked at his door. I felt a good deal as one might
have felt on disturbing an alchemist at his work, at the very moment, it
might be, when he was about to make projection.

--Come in!--said the Master in his grave, massive tones.

I passed through the library with him into a little room evidently
devoted to his experiments.

--You have come just at the right moment,--he said.--Your eyes are better
than mine. I have been looking at this flask, and I should like to have
you look at it.

It was a small matrass, as one of the elder chemists would have called
it, containing a fluid, and hermetically sealed. He held it up at the
window; perhaps you remember the physician holding a flask to the light
in Gerard Douw's "Femme hydropique"; I thought of that fine figure as I
looked at him. Look!--said he,--is it clear or cloudy?

--You need not ask me that,--I answered. It is very plainly turbid. I
should think that some sediment had been shaken up in it. What is it,
Elixir Vitae or Aurum potabile?

--Something that means more than alchemy ever did! Boiled just three
hours, and as clear as a bell until within the last few days; since then
has been clouding up.

--I began to form a pretty shrewd guess at the meaning of all