There might, however, be something to gain by exhibiting his skill before Giovanni and the men.

His reputation as a glass-maker would be made in half an hour.
"Since you do not believe me, come," he said at last.

"You shall see for yourself." He took his blow-pipe and thrust it through one of the 'boccas' to melt off the little red glass that adhered to it.

Then he cooled it in water, and carefully removed the small particles that stuck to the iron here and there like spots of glazing.
"I am ready," he said, when he had finished.
Giovanni rose and led the way, without a word.

Zorzi followed him, shut the door, turned the key twice and thrust it into the bosom of his doublet.