NUTRITION INVESTIGATIONS. 479 



Bulletin No. 77. — Dietary Studies of University Boat Crews. By 

 W. O. Atwater and A. P. Bryant. Pp. 72. Price 5 cents. 



Dietary studies are reported of the Harvard and Yale university and freshman 

 boat crews at their quarters at their respective universities and at Gales Ferry before 

 the annual boat race. A study of the captain of the Harvard freshman crew at Gales 

 Ferry was also made. These investigations were undertaken primarily to secure 

 data regarding the food requirements of men performing severe muscular work. The 

 diet of the boat crews was found to contain more protein and to furnish more energy 

 than that of students not engaged in such exercise. These and other observed facts 

 are discussed in relation to the results of other dietary studies and the commonly 

 accepted theories of nutrition. 



Bulletin No. 84. — Nutrition investigations at the California Agricul- 

 tural Experiment Station, 1896-1898. By M. E. Jaffa, M. S., Assist- 

 ant Professor of Agriculture, University of California. Pp. 39. 

 Price 5 cents. 



This bulletin reports four dietary studies of infants, one of the university football 

 team during training, and one of a chemist's family. A digestion experiment with 

 an infant on a milk diet was also made, as well as a metabolism experiment in which 

 the balance of income and outgo of nitrogen was determined. The results are dis- 

 cussed at considerable length. 



Bulletin No. 85. — A Report of Investigations on the Digestibility and 

 Nutritive Value of Bread. By Chas. D. Woods, Director, and L. H. 

 Merrill, Chemist, Maine Agricultural Experiment Station. Pp. 51. 

 Price 5 cents. 



This technical bulletin is a progress report giving the results of experiments with 

 men on the digestibility of bread of various kinds when eaten alone and when form- 

 ing part of a simple mixed diet. Artificial digestion experiments with the same 

 sorts of bread were also made, and the metabolic nitrogen in the feces and methods 

 of estimating it were studied. In the experiments with men the balance of income 

 and outgo of nitrogen was determined. A test of skim milk versus water for use in 

 mixing dough showed the value of the former, as the resulting bread was richer 

 in protein than that mixed with water. The loss of nutrients which is observed in 

 bread making was also studied. 



Bulletin No. 89. — Experiments on the Effect of Muscular Work Upon 

 the Digestibility of Food and the Metabolism of Nitrogen, con- 

 ducted at the University of Tennessee, 1897 to 1899. By Chas. E. 

 Wait, Ph. D., F. C. S., Professor of Chemistry at the University 

 of Tennessee. Pp. 77. Price 5 cents. 



Sixteen experiments are reported in which the effect of muscular work upon the 

 digestibility of food and upon the metabolism of nitrogen was studied. The subjects 

 were young men in good health and performed muscular work under different die- 

 tary conditions. 



Bulletin No. 91. — Nutrition Investigations at the University of Illi- 

 nois, North Dakota Agricultural College, and Lake Erie College, 

 Ohio, 1896 to 1900. By H. S. Grindley and J. L. Sammis, E. F. 

 Ladd, and Isabel Bevier and Elizabeth C. Sprague. Pp. 42. Price 



5 cents. 



