LITERATURE CITED. 
CIDER MAKING. 
(1) Evelyn, John. Pomona, p. 48. London (1664). 
(2) Gebasde, John. The nerball, pp. 1275-1276. John Norton, London (1 507 f. 
•(3) Maekham, Gervase. Farewell to husbandry. London (1618, 1625, 1638 I . 
(4) Moetimeb, John. The whole art of husbandry, p. 575. London (IToTi. 
(5) Surflet, Richard, and Maekham, Geevase. Maison rustique (English 
translation), pp. 410, 412. London (1616). 
(6) Worlidge, John. Viiieturn Britannicum : or a treatise of cider. London 
(1691). 
METHODS OF ANALYSIS. 
(7) Association of Official Agricultural Chemists. Official and tentative 
methods of analysis, pp. 94, 95, 98. Washington (1919). 
(8) Auld, S. J. M. The formation of prussic acid from linseed cake and other 
feeding stuffs. In J. S. E. Agr. Coll., Wye, Kent, England, No. 20 
(1911) : 289-326. 
(9) Barnett, G. D., and Chapman, H. S. Colorimetric determination of re- 
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Assoc. (1918), 10: 1062. 
(10) Cassal, N. C. Note on the colorimetric estimation of starch. In Chem. 
Eng. Works Chem. (1911), 1: 68-70. 
(11) Clark, W. M., and Lubs, H. A. The colorimetric determination of hydro- 
gen ion concentration and its applications in bacteriology. Jit J. Bact 
i 1017), 2: 1-34, 109-136, 191-236. 
(12) Gillespie, L. J. Colorimetric determination of hydrogen ion concentra- 
tion without buffer mixtures, with especial reference to soils. In Soil 
Science (1920), 9: 115. 
(13) Med alia, L. S. "Color standards" for the colorimetric measurement of 
H-ion concentration pH 1.2-pH 9.8. In J. Bact. (1920), 5: 441 468. 
(14) Salm, E. Studie fiber Indikatoren. In Zeit. physik. Chem. (1906), 
57: 471-501. 
(15) Scuddes, Heyward. The electrical conductivity and ionization constants 
of organic compounds. D. Van Nostrand Co., New York (1914). 
(16) Thomas, A. W. Tabulation of hydrogen and hydroxyl ion concentrations 
of some acids and bases. In J. Am. Leather Chem. Assoc. (1920), 
15 : 133-146. 
(17) Viehoever, Arno. Metliods for the hydrolysis of linamarin and the sub- 
sequent determination of hydrocyanic acid. In J. Assoc. Off. Agr. 
Chem. (1920), vol. 4, no. 1, pp. 151-153. 
>s (18) Wherry, E. T. Soil acidity and a field method for its measurement. 
In Ecology (1920), 1 : 160-173. 
(19) and Adams, E. Q. Physical chemistry. — Methods of stating soil 
acidity. In J. Wash. Acad. Sci. (1921), 11: 197-202, 
BEET PULP AND CORN SILAGE. 
(20) Baeck, E. Sur la digestibilite de la pulpe seche. In Sucr. indig. colon. 
(1908), 71: 451. 
(21) Billings, G. A. Dried beet pulp as a substitute for corn silage. N. J. 
Agr. Exp. Sta. Bull. 189 (1905). pp. 1-13. 
(22) Cardiff, I. D., and Hundertmakk. R. E. Beet plup vs. corn silage. In 
Wash. Agr. Exp. Sta. Bull. 127 (1915), p. !». 
(23) Day, G. E. The dairy herd. In Out. Agr. ('oil. Exp. Farm, 35th Ann. 
Rpt. (1909), p. 140. 
(24) GAMBLE], W. P. Investigations undertaken. In Out. Agr. Coll. 32nd Ann 
Rpt. (1906), p. 83. 
(25) Jones, J. W. Beet-top silage and other by-products of the sugar beet. 
U. S. Dept. Agr.. Farmers' Bull. 1095 (1919), 24 pp. 
(26) Lindsey, J. B. Beet residues for farm stock, In Mass. Agr. Exp. Sta. 
22d Ann. Rpt. (1909). pt. 2. pp. 21-2(5. 
(27) . The food value o\' plain and molasses beet pulp. In Mass. Agr. 
Exp. Sta. 25th Ann. Rpt. (1913), pt. 1, pp. 129-140; pt. 2. pp. 64 66. 
35 
