Zorzi had not put it into the annealing oven because it had been allowed to get quite cold, so that the annealing would have been imperfect.

Giovanni took it up, and uttered a low exclamation of surprise at its lightness.

He held it up and looked through it, and then he took it by the neck and tapped it sharply with his finger-nail.
"Take care," said Zorzi; "it is not annealed.

It may fly." "Oh!" exclaimed Giovanni.

"Have you just made it ?" "Yes." "It is the finest glass I ever saw.