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Copyright 1945 NATIONAL RESEARCH COUNCIL Lithoprinted in U.S.A. EDWARDS BROTHERS, INC. ANN ARBOR, MICHIGAN 1945
FOREWORD The following articles have been prepared by both military and civilian investigators. The points of view and the methods set forth by these men are the ones upon which they rely for ob- taining information about military clothing. The articles are gathered into two groups: I. Those that examine the functional capacity of the clothing to meet the physiological requirement. II. Those designed to obtain information about the physical properties of textiles. The writers were selected by the Subcommittee on Clothing of the National Research Council (U.S.A.) because it was thought that they were well fitted for the task assigned to them. No doubt, equally capable individuals have been overlooked. Never- theless, the authors are, in every case, leading investigators in laboratories that have made important contributions to the war effort. None of the articles are official and none commit the of- ficers in charge of the laboratories. All are open to criticism and none is final. They are published for the consideration of and use by our colleagues who are endeavoring through improvement in military clothing to make their small contribution towards winning the war. L. H. N. February Ann Arbor, Michigan iii
TABLE OF CONTENTS Part I 1. Measurement of Skin and Clothing Temperature (Herrington) 3 2. Calculation of Heat Debt (Burton) 5 3. Evaluation of Thermal Insulation Provided by Clothing (fielding) ... 9 4. Moisture Loss and Moisture Evaporated (Herrington) 21 5. Solar Heat Load (Blum) 23 6. Insulation of Ambient Air and Cooling Effect of Moving Air (Burton) . 37 7. Standardization of Subjects (Talbott) 4l 8. Standardization of Clothing (Talbott) 45 9. Tolerance Time (Talbott) 47 10. Grading of Sensation (Talbott) 49 11. Metabolic Rates for Military Activities (Wulsin) 5l 12. Statistical Consideration of Data (Day) 63 13. Definition of Adequacy (Siple) 65
