f 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 Ernahrung_; Hermann, _Handbuch der Physiologie_, Bd. vi.; Von
Noorden, _Pathologie des Stoffwechsels_; Schafer, _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.)

FOOTNOTES:

[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 fur Olaf Hammarsten_, iii. (Upsala, 1906).

[3] _Ztschr. Biol._ 30, 73.

[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.

[7] _Ztschr. Biol._ 21 (1885), p. 377.

[8] _Connecticut_ (Storrs) _Agricultural Experiment Station Report_
(1899), 73.

[9] One ounce equals 28.35 grams.

[10] As the chief function of both fats and carbohydrates is to
furnish energy, their exact proportion in the diet is of small
account. The amount of either may vary largely according to taste,
available supply, or other condition, as long as the total amount of
both is sufficient, together with the protein to furnish the required
energy.

DIETRICH, CHRISTIAN WILHELM ERNST (1712-1774), German painter, was born
at Weimar, where he was brought up early to the profession of art by his
father Johann George, then painter of miniatures to the court of the
duke. Having been sent to Dresden to