THEORY OF STATISTICS.
Brrors of Sampling in Agricultural Experiment.
A good deal of work has been done on this particular branch of the
subject, and the following references may be useful :—
(102) Berry, R. A., and D. G. O’BriEN, ‘‘ Errors in Feeding Experiments
with Cross-bred Pigs,” Jour. Agr. Sci., vol. xi., 1921, p. 275.
(103) Harris, J. A., “Ona Criterion of Substratum Homogeneity (or Hetero-
geneity) in Field Experiments,” Amer. Naturalist, 1916, p. 430.
(104) HALL, A. D., E. J. RussEnn, T. B. Woop, S. U. PickERING, S. H.
Corrins, ‘The Interpretation of the Results of Agricultural Experi-
ments,” Journal of the Board of Agriculture, Supplement 7, 1911.
(Contains a collection of papers on error in field trials, feeding experi-
ments, horticultural work, milk-testing, ete.)
(105) Lyon, T. L., ‘‘Some Experiments to estimate Errors in Field Plat
Tests,” Proc. Amer. Soc. of Agronomy, vol. iii., 1911, p. 89.
(106) MERCER, W. B., and A. D. Hary, ‘ The Experimental Error of Field
Trials,” Jour. Agr. Science, vol. iv., 1911, p. 107. (With an appendix
by 7 a ” describing the-chessboard method of conducting yield
trials.
(107) MircueLL, H. H., and H. S. GRINDLEY, ‘The Element of Uncertainty
in the Interpretation of Feeding Experiments,” Univ. of Illinois Agr.
Hxp. Station, Bulletin 165, 1913.
(108) RoBiNsoN, G. W., and W. E. LrLoyp, ‘On the Probable Krror of
Sampling in Soil Surveys,” Jour. Agr. Science, vol. viii., 1915, p. 144.
(109) SURFACE, F. M., and RAYMOND PEARL, ‘‘ A Method of Correcting for Soil
Heterogeneity in Variety Tests,” Jour. Agr. Research, vol. v., 1916,
. 1039.
(110) one T. B., and R. A. BERRY, ‘‘ Variation in the Chemical Composi-
tion of Mangels,” Jour. Agr. Science, vol. i., 1905, p. 16.
(111) Woop, T. B., ‘“ The Feeding Value of Mangels,” Jour. Agr. Science,
vol. iii., 1910, p. 225.
(112) Woop, T. B., and F. J. M. STRATTON, ‘‘ The Interpretation of Experi-
mental Results,” Jour. Agr. Science, vol. iii., 1910, p. 417.
(118) BeAVEN, E. S., ‘“ Trials of New Varieties of Cereals,” Jour. Min. Agric.
(England and Wales), vol. xxix., 1922, pp. 387 and 436.
(114) ¢“ STUDENT,” ‘‘ On Testing Varieties of Cereals,” Biometrika, vol. xv.,
1923, p. 271, and supplementary note, vol. xvi., 1924, p. 411.
(115) ExcrLEpow, F. L., and G. U. YuLg, ‘The Principles and Practice
‘of Yield-Trials,” Empire Cotton-Growing Corporation, Millbank House,
Millbank, London, S. W. 1, 1926. Price 2s. (Reprint from the Empire
Ootton-growing Review).
Works on Theory of Statistics, Probability, etc.
(App. IL, p. 361).
(116) BACHELIER, L., Calcul des probabilités, tome i., Gauthier-Villars,
Paris, 1912. r
(117) BACHELIER, L., Le jew, la chance, et le hasard, Flammarion, Paris, 1914.
(118) BowLEY, A. L., Elements of Statistics, P. 8. King, London, 4th ed.,
1920. (This edition has been much extended in Part II., ¢“ Applica-
tions of Mathematics to Statistics”: the two Parts can now be
purchased separately.)
(119) Brown, W., and G. H. TuomsoN, The Essentials of Mental Measure-
ment, 2nd ed., Cambridge University Press, 1921.
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