40. Osborne, T. B.: Handbuch der biochemischen Arbeitsmethoden, E.

Abderhalden, 1909.

41. Osborne, and Mendel: The comparative nutritive value of certain proteins in growth and the problem of the protein minimum, Jour. Biol. Chem., 1915, xx, 351.

42. McCollum, Simmonds, and Parsons: The dietary properties of the pea, Jour. Biol. Chem., 1919, xxxvii, 287.

43. Emmett, A. D., and Luros, G. O.: Is lactalbumin a complete protein for growth?, Jour. Biol. Chem., 1919, xxxviii, 147. Sure, B.: The nutritive value of lactalbumin; crystin and tyrosin as growth limiting factors in this protein, Jour. Biol. Chem., 1920, xliii, 457.

44. Osborne, T. B., and Wakeman, A.: Some new constituents of milk, Jour. Biol. Chem., 1918, xxxiii, 243.

45. Denis, W., and Minot, A. S.: The non-nitrogenous constituents of cow's milk, Jour. Biol. Chem., 1919, xxxviii, 453.

46. Kennedy, C: The forms of nitrogen in protein-free milk, Jour. Amer.

Chem. Soc, 1919, xli, 388. Osborne, and Mendel: The contribution of bacteria to the feces after feeding diets free from indigestible components, Jour. Biol. Chem., 1914, xviii, 177. Osborne, and Mendel: Pub. 156, Carnegie Inst, of Washington, 1911, Part 2, 61. Osborne, and Mendel: Maintenance experiments with isolated proteins, Jour. Biol. Chem., 1912, xiii, 233. Osborne, and Mendel: The suppression of growth and the capacity to grow, Jour. Biol. Chem., 1914, xviii, 95. Osborne, and Mendel: The resumption of growth after long continued failure to grow, Jour. Biol. Chem., 1915, xxiii, 439. Thompson, H. B., and Mendel, L. B.: An experimental study of alternating growth and suppressing growth in the albino mouse with special reference to the economy of food consumption, Amer.

Jour, of Physiol., 1918, xlv, 431. McCollum, and Simmonds: Unpublished data.

47. Thomas, K.: Ueber die biologische wertigkeit der Stickstoff-substanzen in verschiedenen Nahrungsmitteln, Arch. f. Anat. u. Physiol., physiol. Abt., 1909, 219.

48. Nollau, E. H.: The amino-acid content of certain commercial feedingstuffs and other sources of protein, Jour. Biol. Chem., 1915, xxi, 611.

Buckner, G. D., Nollau, E. H., and Kastle, J. H.: Amer. Jour.

Physiol., 1916, xxxix, 162. Kentucky Agr. Exp. Sta. Bull., 1916, 197.

49. Osborne, and Mendel: The effect of the amino-acid content of the diet on the growth of chicks, Jour. Biol. Chem., 1916, xxvi, 293.

50. Johns, C. O., and Jones, D. B.: The proteins of the peanut - Arachis Hypogaea, Jour. Biol. Chem., 1917, xxx, 33. Johns, C. O., and Finks, A. J.: Stitzolobin, the globulin of the Chinese velvet bean, Stizolobium niveum, Ibid., 1918, xxxiv, 429. Johns, C. O., and Chernoff, L. H.: The globulin of buckwheat, Fagopyrum, Ibid., 1918, xxxiv, 439.

51. McCollum, E. V., Simmonds, N., and Pitz, W.: Is lysin the limiting amino-acid in wheat, maize or oats? Jour. Biol. Chem., 1916, xxviii, 483.

52. Hogan, A. G.: The nutritive properties of corn, Jour. Biol. Chem., 1916, xxvii, 193.

53. Osborne, and Mendel: The relative value of certain proteins and protein concentrates as supplements to corn gluten, Jour. Biol. Chem., 1917, xxix, 69.

54. Osborne, and Mendel: Amino-acids in nutrition and growth, Jour.

Biol. Chem., 1914, xvii, 325.

Willcock, E. G., and Hopkins, F. G.: The importance of the individual amino-acids in metabolism. Observations on the effects of adding tryptophan to a dietary in which zein is the sole nitrogenous constituent, Jour. Physiol., 1906-07, xxxv, 88.

Sure, B.: Amino-acids in nutrition: 1. Studies on prolin: Is prolin a growth-limiting factor in arachin (globulin from the peanut)? Jour. Biol. Chem., 1920, xliii, 443.

2. The nutritive value of lactalbumin: cystin and tyrosin as growth-limiting factors in that protein, Ibid., xliii, 457.

3. Is prolin a growth-limiting factor in the protein of peas (Vicia sativa)? What nucleus in zein is responsible for supplementing these proteins?, Ibid., 1921, xlvi, 443.

Osborne, and Mendel: The comparative nutritive value of certain proteins in growth and the problem of the protein minimum, Jour. Biol. Chem., 1915, xx, 351.

Osborne, and Mendel: The amino-acid minimum for maintenance and growth as exemplified by further experiments with lysin and tryptophan, Ibid., 1916, xxv, 1.

Johns, and Finks: The role of cystin in nutrition as exemplified by experiments with the proteins of the navy bean, Jour. Biol. Chem., 1920, xli, 379.

Mitchell, H. H.: Feeding experiments on the substitution of protein by definite mixtures of isolated amino-acids, Jour. Biol. Chem., 1916, xxvi, 231.

Lewis, H. B., and Root, L. E.: Amino-acid synthesis in the animal organism - Can norleucin replace lysin for the nutritive requirements of the rat?, Jour. Biol. Chem., 1920, xliii, 79.

55. Richardson, A. E., and Green, H. S.: Nutrition investigations upon cottonseed meal, Jour. Biol. Chem., 1916, xxv, 307; Ibid., 1917, xxx, 243. Osborne, and Mendel: Nutritive properties of the maize kernel, Ibid., 1914, xvii, 1. Hart, E. B., and Humphrey, G. C: The relation of the quality of the proteins to milk production, Ibid., 1915, xxi, 239. McCollum, Simmonds, and Pitz: Dietary deficiencies of the maize kernel, Ibid., 1916-17, xxviii, 153. Osborne, and Mendel: The use of cottonseed as food, Ibid., 1917, xxix, 289. McCollum, Simmonds, and Pitz: The dietary deficiencies of the white bean, Ibid., 1917, 521. McCollum, Simmonds, and Pitz: The supplementary dietary relationship between leaf and seed as contrasted with combinations of seed with seed, Ibid., 1917, xxx, 13. McCollum, and Simmonds: The dietary properties of mixtures of maize kernel and bean, Ibid., 1917, xxxii, 209.

Daniels, A. L., and Loughlin, R.: Feeding experiments with peanuts, Ibid., 1918, xxxiii, 295. McCollum, and Simmonds: The causes of failure of mixture of seeds to promote growth in young animals, Ibid., 1918, xxxiii, 303. Steenbock, H., Kent, H. E., and Gross, E. G.: The dietary qualities of barley, Ibid., 1918, xxxv, 61. McCollum, Simmonds, and Parsons: Supplementary protein values in foods, iii, Jour. Biol. Chem., 1921, xlvii, 111-247.

56. McCollum: The values of the proteins of cereal grains and of milk for growth in the pig, and the influence of the plane of protein intake on growth, Jour. Biol. Chem., 1914, xlx, 323. Hart, and McCollum: Influence on growth of rations restricted to the corn or wheat grain, Ibid., 1914, xix, 373.

57. McCollum, and Davis: The nature of the dietary deficiencies of the rice kernel, Ibid., 1915, xxiii, 181.

58. McCollum, Simmonds, and Pitz: The nature of the dietary deficiencies of the wheat embryo, Ibid., 1916, xxv, 105.

The nature of the dietary deficiencies of the oat kernel, Ibid., 1917, xxix, 341.

The dietary deficiencies of the white bean, Ibid., 1917, xxix, 521. Osborne, and Mendel: Nutritive factors in plant tissues; the protein factor in the seeds of cereals, Jour. Biol. Chem., 1918, xxxiv, 521. Osborne, and Mendel: Nutritive factors in animal tissues, Ibid., 1917, xxxii, 309; Ibid., 1918, xxxiv, 17. Osborne, and Mendel: Nutritive value of the wheat kernel and its milling products, Ibid., 1919, xxxvii, 557. Sugiura, K., and Benedict, S. R.: The nutritive value of the banana, Jour. Biol. Chem., 1918, xxxvi, 171. McCollum, Simmonds, and Parsons: The dietary properties of the potato, Jour. Biol. Chem., 1918, xxxvi, 197.

59. Osborne, and Mendel: Nutritive properties of the maize kernel, Jour. Biol. Chem., 1914, xviii, 1. Hogan, A. G.: The nutritive properties of corn, Ibid., 1916, xxvii, 193. Johns, C. 0., and Brewster, J. F.: Kafirin, an alcohol-soluble protein from kafir, Jour. Biol. Chem., 1916-17, xviii, 59. McCollum, Simmonds, and Pitz: Dietary deficiencies of the maize kernel, Jour. Biol. Chem., 1916-17, xxviii, 153. McCollum, Simmonds, and Pitz: The effects of feeding the proteins of the wheat kernel at different planes of intake, Jour. Biol. Chem., 1916-17, xviii, 211. McCollum, Simmonds, and Pitz: Is lysin the limiting amino-acid in the proteins of the wheat, maize or oat kernel?, Jour. Biol. Chem., 1916-17, xxviii, 483. Daniels, A. L., and Nichols, N. B.: The nutritive value of the soy bean, Jour. Biol. Chem., 1917, xxxii, 91. Osborne, and Mendel: The use of the soy bean as food, Jour. Biol.

Chem., 1917, xxxii, 369. Hogan: The nutritive properties of kafirin, Jour. Biol. Chem., 1918, xxxiii, 151.