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THE THIRTEENTH
Greatest of Centuries

BY
JAMES J. WALSH, K.C.St.G., M.D., Ph.D., LL.D, LITT. D. (Georgetown), Sc.D. (Notre Dame)
MEDICAL DIRECTOR, SCHOOL OF SOCIOLOGY, FORDHAM UNIVERSITY; PROFESSOR OF PHYSIOLOGICAL PSYCHOLOGY AT CATHEDRAL COLLEGE, NEW YORK; LECTURER IN PSYCHOLOGY, MARYWOOD COLLEGE, SCRANTON AND ST. MARY'S COLLEGE, PLAINFIELD; TRUSTEE OF THE CATHOLIC SUMMER SCHOOL OF AMERICA; MEMBER OF THE NEW YORK ACADEMY OF MEDICINE, OF THE GERMAN AND FRENCH AND ITALIAN SOCIETIES OF THE HISTORY OF MEDICINE, A.M.A., A.A.A.S., ETC.
Popular Edition
(Sixtieth Thousand)
CATHOLIC SUMMER SCHOOL PRESS
New York, 1920

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Copyright 1907
James J. Walsh
Set up and stereotyped 1907 (first edition 2,000)
Reprinted with Appendix 1909
Georgetown edition enlarged and extra illustrated 1910
Fourth edition reprinted with additions (6th thousand) 1912
Fifth edition, Knights of Columbus, 50,000, 1912-1913.
Made by
THE SUPERIOR PRINTING CO
AKRON, OHIO

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To Right Rev. Monsignor M. J. Lavelle,

Rector of St. Patrick's Cathedral, New York, sometime President of the Catholic Summer School, to whose fatherly patronage this book is largely due, and without whose constant encouragement it would not have been completed, it is respectfully and affectionately dedicated by the author.

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PROEM.