AUTHORITIES.--COMPOSITION OF FOODS:--König, _Chemie der menschlichen Nahrungs- und Genussmittel_; Atwater and Bryant, "Composition of American Food Materials," Bul. 28, Office of Experiment Stations, U.S. Department of Agriculture. NUTRITION AND DIETETICS:--Armsby, _Principles of Animal Nutrition_; Lusk, _The Science of Nutrition_; Burney Yeo, _Food in Health and Disease_; Munk and Uffelmann, _Die Ernährung des gesunden und kranken Menschen_; Von Leyden, _Ernährungstherapie und Diätetik_; Dujardin-Beaumetz, Hygiène alimentaire; Hutchison, _Food and Dietetics_; R. H. Chittenden, _Physiological Economy in Nutrition_ (1904), _Nutrition of Man_ (1907); Atwater, "Chemistry and Economy of Food," Bul. 21, Office of Experiment Stations, U.S. Department of Agriculture. See also other Bulletins of the same office on composition of food, results of dietary studies, metabolism experiments, &c., in the United States. GENERAL METABOLISM:--Voit, _Physiologie des allgemeinen Stoffwechsels und der Ernährung_; Hermann, _Handbuch der Physiologie_, Bd. vi.; Von Noorden, _Pathologie des Stoffwechsels_; Schäfer, _Text-Book of Physiology_, vol. i.; Atwater and Langworthy, "Digest of Metabolism Experiments," Bull. 45, Office of Experiment Stations, U.S. Department of Agriculture. (W. O. A.; R. D. M.)
[1] The terms applied by different writers to these nitrogenous compounds are conflicting. For instance, the term "proteid" is sometimes used as protein is here used, and sometimes to designate the group here called albuminoids. The classification and terminology here followed are those tentatively recommended by the Association of American Agricultural Colleges and Experiment Stations.
[2] Folin, _Festschrift für Olaf Hammarsten_, iii. (Upsala, 1906).
[4] In Russian. Cited in United States Department of Agriculture, Office of Experiment Stations, Bul. No. 45, _A Digest of Metabolism Experiments_, by W. O. Atwater and C. F. Langworthy.
[5] _Arch. physiol. norm. et path._ (1894) 4.
[6] U.S. Department of Agriculture, Office of Experiment Stations, Bulletins Nos. 63, 69, 109, 136, 175. For a description of the respiration calorimeter here mentioned see also publication No. 42 of the Carnegie Institution of Washington.