PREFACE

The following study is part of an extensive investigation of the
subject of ventilation in its various biological and mechanical
aspects, carried on during the years 1913-1916 by the New York
State Commission on Ventilation.^ This Commission, appointed
by the Governor of the State of New York at the request of the
New York Association for Improving the Condition of the Poor,
was enabled to carry on its work by the aid of the Ehzabeth Milbank
Anderson Fund. The other psychological experiments of the
Commission, which were, like this one, planned by Professor
Edward L. Thorndike and carried out under his direction, are
described in full in a recent number of the Teachers College Con¬
tributions to Education, and briefly reviewed in the historical
section of this monograph.

From the foregoing statement of the place of this study in the
series of psychological investigations already made by the Com¬
mission, it will be evident how deeply the writer is indebted to
Professor Thorndike for guidance and advice. She has great
pleasure, moreover, in acknowledging her obligation to Professors
J. McKeen Cattell, Robert S. Woodworth and Harry L. Holling¬
worth. Her thanks are also due Mr. George T. Palmer, Chief of
the Investigating Staff, and Mr. Joseph Herzstein, Secretary of the
Commission.

^ Members of the Commission: Professor Charles-E. A. Winslow, Professor
Frederick S. Lee, Professor Edward L. Thorndike, Mr. D. D. Kimball, Dr. James
Alexander Miller, Professor Earle B. Phelps.
 

HI