PROFESSOR SAUNDERSON, who occupied so distinguished a situation in the
University of Cambridge as that of Lucasian Professor of Mathematics,
was quite blind. Happening to make one in a large party, he remarked
of a lady, who had just left the room, that she had very white teeth.
The company were anxious to learn how he had discovered this, which was
very true. I have reason, observed the professor, to believe that the
lady is not a fool, and I can think of no other motive for her
laughing incessantly, as she did for a whole hour together.