Nutrition and Other Subjects of Allied Interest 95 



formulae. Measurements of 136 men, 103 women, and 94 new-born infants serve 

 as a basis of the conclusions drawn; all of these measurements have been made at 

 the Nutrition Laboratory or by those working in co-operation with this institution. 

 The original data, many of which have not heretofore been published, are given in 

 full. These data, the most extensive series as yet available, have been summarized 

 in terms of statistical constants (means, standard deviations, coefficients of varia- 

 tion, coefficients of correlation, and regression equations) which must serve as 

 standard constants in metabolism work until those based upon more extensive series 

 of data are available. The relationships between certain of the physical and physio- 

 logical measurements of the human individual and between the various physiologi- 

 cal measurements have been expressed in terms of correlation coefficients and rep- 

 resented by regression equations. Special consideration was given to the relation- 

 ship between metabolism and age, the differentiation of the sexes in metabolic 

 activity, the validity of the so-called body-surface law, and a presentation of 

 standard tables prepared for men and women, from which the most probable 

 metabolism of a subject whose normal basal metabolism is unknown may be easily 

 determined. 



No. 280. BENEDICT, FRANCIS G., WALTER R. MILES, PAUL ROTH, and H. MON- 

 MOUTH SMITH. Human Vitality and Efficiency under Prolonged Re- 

 stricted Diet. Octavo, xi-f-702 pages, 124 figures. Published 1919. 

 Price $9.00. 



To study the influence of a prolonged restriction in diet twelve young men 

 (average age 23 years) were kept on one-half to two-thirds of their caloric re- 

 quirements for four months. During this period measurements were made of the 

 gaseous metabolism, food intake, nitrogen output, and digestibility of food. A 

 large number of physiological measurements, such as blood-pressure, pulse-rate, 

 respiration-rate, and body-temperature, and a series of psychological tests were 

 carried out, as well as a measurement of the mechanical efficiency of the body. 

 A control squad of twelve men was simultaneously studied. No bad effects were 

 noted and the results lead to many considerations of practical importance. 



