PHYSIOLOGICAL ECONOMY IN NUTRITION _WITH SPECIAL REFERENCE TO THE MINIMAL PROTEID REQUIREMENT OF THE HEALTHY MAN_ AN EXPERIMENTAL STUDY BY RUSSELL H. CHITTENDEN, PH.D., LL.D., SC.D. DIRECTOR OF THE SHEFFIELD SCIENTIFIC SCHOOL OF YALE UNIVERSITY AND PROFESSOR OF PHYSIOLOGICAL CHEMISTRY; MEMBER OF THE NATIONAL ACADEMY OF SCIENCES; PRESIDENT OF THE AMERICAN PHYSIOLOGICAL SOCIETY; MEMBER OF THE AMERICAN PHILOSOPHICAL SOCIETY, ETC. NEW YORK FREDERICK A. STOKES COMPANY 1907 _Copyright, 1904_, BY FREDERICK A. STOKES COMPANY Published in November, 1904 THE UNIVERSITY PRESS, CAMBRIDGE, U. S. A. LIST OF ILLUSTRATIONS FACING PAGE Group of soldiers at work in the Gymnasium 136 Side view of Fritz 198 Back view of Fritz 204 Front view of Coffman and Steltz 212 Back view of Coffman and Steltz 220 Side view of Zooman and Cohn 234 Back view of Zooman and Cohn 240 Side view of Loewenthal and Morris 258 Group of soldiers exercising in the Gymnasium 262 Front view of Sliney 272 Soldiers exercising in the Gymnasium 284 Soldiers exercising in the Gymnasium 296 Side view of Stapleton 328 Back view of Stapleton 366 Front view of W. L. Anderson and Bellis 440 Back view of W. L. Anderson and Bellis 442 ACKNOWLEDGMENTS OF FINANCIAL AID IN MEETING THE EXPENSE OF THE EXPERIMENTS HEREIN DESCRIBED