jan. 3,i 9 2i Correlation and Causation 585 



LITERATURE CITED 



(1) Bravais, A. 



1846. ANALYSE MATHEMATIQUE. SUR LES PROBABILITES DES ERREURS DE 



situation d'un point. In Mem. Acad. Roy. Sci. Inst. France, Sci. 

 Math, et Phys., t. 9, p. 255-332. 



(2) Briggs, Lyman J., and Shantz, H. L. 



1916. DAILY TRANSPIRATION DURING THE NORMAL GROWTH PERIOD AND ITS 



correlation with the weather. In Jour. Agr. Research, v. 7, no. 

 4, p. 155-212, 18 fig., 6 pi. 



(3) 



1916. hourly transpiration rate on clear days as determined by cyclic 



environmental Factors. In Jour. Agr. Research, v. 5, no. 14, p. 

 583-649. 22 fig., pi. 53-55. 



(4) G alton, Francis. 



1888. co-relations and their measurement, chiefly from anthropo- 

 metric data. In Proc. Roy Soc. London, v. 45, no. 274, p. 135-145. 



(5) ISSERLIS, L. 



1914-15. on the partial correlation ratio, i-ii. In Biometrika, v. 10, 

 pt. 2/3, p. 391-411, 1914; v. 11, pt. 1/2. p. 50-66, 1915. 



(6) Pearson, Karl. 



1897. mathematical contributions to the theory of evolution.— hi. 

 regression, heredity, and panmixia. In Phil. Trans. Roy. Soc. 

 London, s. A., v. 187, 1896, p. 253-318. 



(7) 



1905. mathematical contributions to the theory of evolution.— XIV. 



ON THE GENERAL THEORY OF SKEW CORRELATION AND NON-LINEAR 



regression. Drapers' Co. Research Mem. Biom. Ser. 2, 54 p. 3 pi. 



(8) Wright, Sewall. 



1918. on the nature OF size factors. In Genetics, v. 3, no. 4, p. 367-374. 



(9) 



1920. THE RELATIVE IMPORTANCE OF HEREDITY AND ENVIRONMENT IN DE- 

 TERMINING THE PIEBALD PATTERN OF GUINEA PIGS. In ProC. Nat. 



Acad. Sci., v. 6, no. 6, p. 320-332. 6 fig. 



