LITERATURE CITED. 
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(2) CastiE, W. H., and Pur.ies, J. C. 
1914. Piebald rats and selection. Carnegie Inst. Washington Pub. 195, 
56 p., 2 pl. Bibliography, p. 31. 
Cortins, G. N. 
(3) 1909. A new type of Indian corn from China. U.S. Dept. Agr., Bur. 
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(4) 1912. Gametic coupling as a cause of correlations. In Amer. Nat., v. 
46, no. 550, p. 569-590. 
(5) 1913. Mosaic coherence of characters in seeds of maize. In U. 8. Dept. 
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and Kempton, J. H. 5 
(6) 1912. An improved method of artificial pollination in corn, U. S. Dept. 
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(7) 1913. Inheritance of waxy endosperm in hybrids of Chinese maize. 
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p. 347-357. 
(8) 1913. Inheritance of waxy endosperm in hybrids with Sweet corn. Jn 
U. S. Dept. Agr., Bur. Plant Indus. Cir. 120, p. 21-27, 1 fig. 
(9) Exprrton, W. P. 2 
1902. Tables for testing the goodness of fit of theory to observation. 
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(10) Heron, Davin. 
1911. The danger of certain formule suggested as substitutes for the 
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(11) Morean, T. H. 
1911. Random segregation versus coupling in Mendelian inheritance. 
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(12) Peart, RAyMonp, and MINER, J. R. 
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(13) PEARSON, KARL. 
1900. On the criterion that a given system of deviations from the prob- 
able in the case of a correlated system of variables is such that 
it can be reasonably supposed to have arisen from random 
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(14) Yutz, G. U. 
1900. On the association of attributes in statistics. Jn Phil. Trans. Roy. 
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(15) 1912. On the methods of measuring association between two attributes. 
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cussion, p. 648-652. References, p. 641-642. 
(16) 1914. Fluctuations of sampling in Mendelian ratios. Jn Proc. Cambridge 
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O 
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