The table and chair had nothing, the pail had once possessed a handle, but that had been removed.
Dantes had but one resource, which was to break the jug, and with one of the sharp fragments attack the wall.

He let the jug fall on the floor, and it broke in pieces.
Dantes concealed two or three of the sharpest fragments in his bed, leaving the rest on the floor.

The breaking of his jug was too natural an accident to excite suspicion.

Edmond had all the night to work in, but in the darkness he could not do much, and he soon felt that he was working against something very hard; he pushed back his bed, and waited for day.
All night he heard the subterranean workman, who continued to mine his way.

Day came, the jailer entered.