from one side to the other of the staircase with the rise or
dip of the tower. Some of the stone steps are foot-worn only on one end;
others only on the other end; others only in the middle. To look down
into the tower from the top is like looking down into a tilted well. A
rope that hangs from the centre of the top touches the wall before it
reaches the bottom. Standing on the summit, one does not feel altogether
comfortable when he looks down from the high side; but to crawl on your
breast to the verge on the lower side and try to stretch your neck out
far enough to see the base of the tower, makes your flesh creep, and
convinces you for a single moment in spite of all your philosophy, that
the building is falling. You handle yourself very carefully, all the
time, under the silly impression that if it is not falling, your trifling
weight will start it unless you are particular not to "bear down" on it.

The Duomo, close at hand, is one of the finest cathedrals in Europe. It
is eight hundred years old. Its grandeur has outlived the high
commercial prosperity and the political importance that made it a
necessity, or rather a possibility. Surrounded by poverty, decay and
ruin, it conveys to us a more tangible impression of the former greatness
of Pisa than books could give us.

The Baptistery, which is a few years older than the Leaning Tower, is a
stately rotunda, of huge dimensions, and was a costly structure. In it
hangs the lamp whose measured swing suggested to Galileo the pendulum.
It looked an insignificant thing to have conferred upon the world of
science and mechanics such a mighty extension of their dominions as it
has. Pondering, in its suggestive presence, I seemed to see a crazy
universe of swinging disks, the toiling children of this sedate parent.
He appeared to have an intelligent expression about him of knowing that
he was not a lamp at all; that he was a Pendulum; a pendulum disguised,
for prodigious and inscrutable purposes of his own deep devising, and not
a common pendulum either, but the old original patriarchal Pendulum--the
Abraham Pendulum of the world.

This Baptistery is endowed with the most pleasing echo of all the echoes
we have read of. The guide sounded two sonorous notes, about half an
octave apart; the echo answered with the most enchanting, the most
melodious, the richest blending of sweet sounds that one can imagine. It
was like a long-drawn chord of a church organ, infin