NUTRITION IN RELATION TO REPRODUCTION                    209

(27)  Nichols, J. E. Ztschr. f. Tierziichtyng u. Züchtungsbiol., 10, 225-234.
(28)  Stewart, W. L. Vet. Rec., 1931, 11, 1033.
(29)  Loeb, Biol. Bull., 1917, 32, No. 6.
(30)  Kennedy, W. P. Physiol. Rev., 1926, 6, 485.
(31)  Nichols, J. E. J. Agric. Sci., 1926, 16, 365-375.
(32)  Nichols, J. E. J. Minist. Agric. (Engl.), 1926, 33, 218-225.
(33)   nbsp;   nbsp;Mohler, J. R. Rep. Chief U. S. A. Bur. Animal Indust., 1931.
(34)  Theiler, Green and Du Toit. J. Agric. Sci., 1927, 17, 291 ; 1928, 18, 369.
(35)  Du Toit, P. J. and Bisschop, J. H. R. Ann. Rept. Div. Vet. Serv., S. A., 1929, 1059-1166.
(36)  Eckles, Becker and Palmer. Minnesota Stat. Bull., 1926, No. 229.
(37)  Hart, G. H. ' The Scientific Principle of Nutrition with particular reference to Percentage.
Calf Crop in Range Herds '. 11th Int. Vet. Congr., London, 1930.
(38)  Orr, J. B. ' Minerals in Pastures,' H. K. Lewis, London, 1929.
(39)  Hart, McCollum, Steenbock and Humphrey. Res. Bull. No. 17, Agric. Exp. Stat.,
Wisconsin, 1911.
(40)  Hart, McCollum, Steenbock and Humphrey. J. Agri. Res., 1917, 10, 175-198.
(41)  Hart, Steenbock and Humphrey. Res. Bull. No. 49, Agric. Exp. Stat., Wisconsin, 1920.
(42)  Hart, Steenbock and Morrison, Res. Bull. No. 390, Agric. Exp. Stat., Wisconsin, 1927.
(43) Meigs, E. B. Proc. World's Dairy Cong., 1924, p. 1046.
(44)  Simmonds, N. Amer. J. Hyg., 1924, 4, Supplement.
(45)  Küst, Frei, W. Schw. Arch. f. Tierheilk., 1931, 73, No. 11.
(46) Davidson, H. R. J. Agric. Sci., 1930, 20, 233-264.
(47) Rettger, L. F., White, G. C. and Chapman, L. M. Storrs Agric., Exp. Stat. Rep., 1920-23.
Pub. Doc. No. 34, pp. 59-88.
(48)  Kossmag, M. Tierärztl. Rundschau, 1931, 37, 386-387.
(49)  McGilvray, C. D. Ontario Dept. Agric. Bull. No. 304, 1925.
(50)  Graves, E. F. J. Amer. Vet. Med. Assoc., 1930, 77, 354-361.
(51)  Orr, J. B., and Leitch, I. ' Iodine in Nutrition '. M. R. C. Spec. Rep. Series, No. 126, 1929.
(52)  Velu, H., and Balozet, L. Bull. Acad. Vet. de France, 1931, 4, 373-376.
(53)  Velu, H. C. R. Soc. Biol., 1931, 108, 635-637 .
(54)  Velu, H. Ibid., 750-752.
(55)  Churchill, H. V. J. Dent. Res., 1932, 12, 141-148.
(56)  McCollum, E. V., Simmonds, N., Becker, J. E., and Bunting. R. W. J. Biol, Chem., 1925,
63, 553.
(57)  Schulz, J. A., and Lamb, A. R. Science, 1925, 61, 93.
(58)  Bergara, C. C. R. Soc. Biol., 1927, 97, 600-602.
(59) Del. Castillo, E. B. Ibid., 1928, 99, 1405.
(60)  Chaneles, J. Rev. Soc. Argent. Biol., 1929, 5, 317-396.
(61)  Velu, H. Note to Soc. Pathol. Exotique, Dec., 1931.
(62)  Slonaker and Card. Amer J. Physiol., 1923, 64, 35-43.
(63)  Slonaker and Card. Ibid., 167-180.