and the violence of the shock made the ground tremble.
However, we were grateful, for the rock was gone.
Its place was occupied by a new cellar, about thirty
feet across, by fifteen feet deep. The explosion was
heard as far as Zermatt; and an hour and a half afterward,
many citizens of that town were knocked down and quite
seriously injured by descending portions of mule meat,
frozen solid. This shows, better than any estimate
in figures, how high the experimenter went.

We had nothing to do, now, but bridge the cellar and proceed
on our way. With a cheer the men went at their work.
I attended to the engineering, myself. I appointed a strong
detail to cut down trees with ice-axes and trim them for
piers to support the bridge. This was a slow business,
for ice-axes are not good to cut wood with. I caused
my piers to be firmly set up in ranks in the cellar,
and upon them I laid six of my forty-foot ladders,
side by side, and laid six more on top of them.
Upon this bridge I caused a bed of boughs to be spread,
and on top of the boughs a bed of earth six inches deep.
I stretched ropes upon either side to serve as railings,
and then my bridge was complete. A train of elephants
could have crossed it in safety and comfort. By nightfall
the caravan was on the other side and the ladders were
taken up.

Next morning we went on in good spirits for a while,
though our way was slow and difficult, by reason of the
steep and rocky nature of the ground and the thickness