l samples of the gentian flower. It is a
first-class fever medicine and tonic. Do you think you could distinguish
it by its large blue-colored, fringed flowers?"

"I know what you mean; it has one central stalk, with big leaves at the
bottom which gradually grow smaller, and in which the stem seems to go
up through the flowers."

"That describes it exactly. Get some of the roots, and peel them, then
scrape a quantity, so we can give some to Harry."

This is a simple remedy, in the absence of regular fever medicines which
were not available to them.

To their great relief the fever abated before morning, and by
persistently taking the gentian tonic Harry was soon well again.

This little experience was sufficient notice that in health at least
some preparation should be made for illness, which is sure to come to
all at most unexpected times. It had also a stimulating effect in more
pointedly directing the attention of the boys to the wonders of the
vegetable world.

It was now the latter part of June, and the weather was not at all cold.
Plenty of rain had fallen, and the Cataract stream had risen so high
that their water wheel had been out of commission for several weeks, and
Harry's illness or indisposition had somewhat retarded the work in the
factory.

"Wouldn't it be a good idea to look up that animal over in the cave?"
was George's first suggestion, one morning, shortly after Harry's
recovery. "We might put in a little time there, and then go down around
the bay on a little tour."

This was agreeable to all, and then George remembered the want of the
candles. Zinc had been turned out, as previously told, but no steps had
been taken toward making a battery which would be the starting point for
an electric lighting system, as Harry and George both hoped for.

"It seems to me," said Harry, "that we ought to explore the coast line
to the southeast of us, as we have never been in that direction, and
then work our way around to the cliff cave."

Without further words the yaks were yoked up, and taking a hearty
luncheon they were off for the east coast, where the bay indented the
land. The coast was reached within two hours, a great deal of the time
en route being spent in gathering samples of plants, flowers, and fruit,
of which some species of trees were filled.

To the right of the place where they struck the sea was a cape which ran
out into the sea for fully a quarter of a mile, and to the south of this