at he was
able to follow the latter and enter the doorway without being noticed.
Once there he had to pause and draw breath for a moment, so greatly did
the beating of his heart oppress him.

A precipitous flight of steps, where all was steeped in darkness,
descended from the narrow entry. It was with infinite precaution that
Pierre ventured into the gloom, which ever grew denser and denser. He
lowered his feet gently so as to make no noise, and feeling the walls
with his hands, turned round and round as he went lower and lower into a
kind of well. However, the descent was not a very long one. As soon as he
found beaten ground beneath his feet he paused, no longer daring to stir
for fear of betraying his presence. The darkness was like ink, and there
was not a sound, a breath; the silence was complete.

How should he find his way? he wondered. Which direction ought he to
take? He was still hesitating when some twenty paces away he suddenly saw
a bright spark, the gleam of a lucifer. Guillaume was lighting a candle.
Pierre recognised his broad shoulders, and from that moment he simply had
to follow the flickering light along a walled and vaulted subterranean
gallery. It seemed to be interminable and to run in a northerly
direction, towards the nave of the basilica.

All at once the little light at last stopped, while Pierre, anxious to
see what would happen, continued to advance, treading as softly as he
could and remaining in the gloom. He found that Guillaume had stood his
candle upon the ground in the middle of a kind of low rotunda under the
crypt, and that he had knelt down and moved aside a long flagstone which
seemed to cover a cavity. They were here among the foundations of the
basilica; and one of the columns or piles of concrete poured into shafts
in order to support the building could be seen. The gap, which the stone
slab removed by Guillaume had covered, was by the very side of the
pillar; it was either some natural surface flaw, or a deep fissure caused
by some subsidence or settling of the soil. The heads of other pillars
could be descried around, and these the cleft seemed to be reaching, for
little slits branched out in all directions. Then, on seeing his brother
leaning forward, like one who is for the last time examining a mine he
has laid before applying a match to the fuse, Pierre suddenly understood
the whole terrifying business. Considerable quantities of the new
explosive had been brought to tha