Note 188 — Scene I.—A Hall in the same Palace, from whence the secret Passage leads.
Reading edition
{404}[A cavity at the lower end of the lead attached to a sounding-line is partially filled with an arming (tallow), to which the bottom, especially if it be sand, shells, or fine gravel, adheres.—Knights's American Mechanical Dictionary, 1877, art. "Sounding-Apparatus."]