The man of science felt the side pocket of his waistcoat.
"I have them," he replied.
"Show them to me," she said. "Often you have only the case."
The professor took the case out of his pocket and showed the spectacles with a triumphant air.
"You would do well to keep them on your nose," she said.
M. de Saint-Leu put on his spectacles, after rubbing the glasses with his handkerchief.
Naturally, he thrust the handkerchief under his left arm while he set his spectacles on his nose. Then he walked a few steps towards the Rue de Fleurus and relaxed his hold on the handkerchief, which fell.