When the paste is quite dry the small globule of lead is placed in the depression in the centre of the bone-ash "cupel," and is there exposed to the O. F. from the Bp.
"The Elements of Blowpipe Analysis"
Frederick Hutton Getman
His words had a passion in them not usual in the calm, pure flow most natural to his uttered thoughts; white-hot iron we are familiar with, but white-hot silver is what we do not often look upon, and his inspiring address glowed like silver fresh from the cupel.
"The Complete PG Works of Oliver Wendell Holmes, Sr."
Oliver Wendell Holmes, Sr. (The Physician and Poet not the Jurist)
"The cupel furnace, too," he exclaimed.
"The Red Thumb Mark"
R. Austin Freeman