the text permits, introducing as few novelties of my
own as possible, and to add such comment as may
bring out the permanent value of the various treatises.
They are no longer useful as text-books, but all of
us, whether medical or lay, may learn a lesson from
the devotion to truth which marked the school of
Cos, and from the blunders committed by theorizers
who sought a short cut to knowledge without the
labour of patient observation and careful experiment.
The present volume has been in preparation since
1910, and the actual writing has occupied all my
leisure for the past three years. The time would
have been longer, had it not been for the great kindness
of Dr. E. T. Withington, whose name will
probably appear on the title-page of one of the
My thanks are also due to the Rev. H. J. Chaytor
for his helpful criticisms.
W. H. S. JONES.