subject which lies at the very root of evolutionary
philosophy."

"Ah! she is the dearest girl," cried O'Brien,
with a sudden little spurt of Celtic enthusiasm--"she
is the soul of truth and of honour."

"The vermiform appendix----" began the Professor.

"She is an angel from heaven," interrupted the
other. "I fear that it is my advocacy of scientific
freedom in religious thought which stands in my way
with her."

"You must not truckle upon that point. You must
be true to your convictions; let there be no
compromise there."

"My reason is true to agnosticism, and yet I am
conscious of a void--a vacuum. I had feelings at the
old church at home between the scent of the incense
and the roll of the organ, such as I have never
experienced in the laboratory or the lecture-room."

"Sensuous-purely sensuous," said the Professor,
rubbing his chin. "Vague hereditary tendencies
stirred into life by the stimulation of the nasal and
auditory nerves."

"Maybe so, maybe so," the younger man answered