"The first great advance of the human race,"
said the Professor, "was when, by the
development of their left frontal convolutions, they
attained the power of speech. Their second advance
was when they learned to control that power. Woman
has not yet attained the second stage."

He half closed his eyes as he spoke, and thrust
his chin forward, but as he ceased he had a trick of
suddenly opening both eyes very wide and staring
sternly at his interlocutor.

"I am not garrulous, John," said his sister.

"No, Ada; in many respects you approach the
superior or male type."

The Professor bowed over his egg with the manner
of one who utters a courtly compliment; but the lady
pouted, and gave an impatient little shrug of her
shoulders.

"You were late this morning, John," she remarked,
after a pause.

"Yes, Ada; I slept badly. Some little cerebral
congestion, no doubt due to over-stimulation of the
centers of thought. I have been a little disturbed
in my mind."