going up a flight of stairs, until he stood clear against the sky,
when, with another wave of his bonnet, he too disappeared.

Mercy did not forget to look from her window in the direction
Alister had indicated. There was no room to mistake what he meant,
for through the dark ran a great opening to the side of a hill,
somewhere in the night, where glowed and flamed, reddening the air,
a huge crescent of fire, slowly climbing, like a column of attack,
up toward the invisible crest.

"What does it mean?" she said to herself. "Why do they make such a
bonfire--with nobody but themselves to enjoy it? What strange
men--out by themselves in the dark night, on the cold hill! What can
they be doing it for? I hope they have something to eat! I SHOULD
like to hear them talk! I wonder what they are saying about US! I am
certain we bored them!"

The brothers did speak of them, and readily agreed in some notion of
their characters; but they soon turned to other things, and there
passed a good deal that Mercy could not have followed. What would
she, for instance, have made of Alister's challenge to his brother
to explain the metaphysical necessity for the sine, tangent, and
secant of an angle belonging to its supplement as well?

When the ladies overtook them in the morning, Alister was reading,
from an old manuscript volume of his brother's which he had found in
a chest, a certain very early attempt at humour, and now they
disputed concerning it as they watched the fire. It had abundance of
faults, and in especial lacked suture, but will serve to show
something of lan's youthful ingenium.