78 STATISTICAL METHODS. 



Organs. r 



Body length and number antennal joints .013 .067 



Circumference of statoblast and number spines, 



Pectinatella . .092 .006 



Num. R. definite teeth and L. indefinite, Nereis .524 .023 



Carapp-ce length and chela index, Eupagurus .522 .022 



Num. of cysts and their diam., Actinosphserium .669 .040 



Plants. 



Between various parts of flowers, Ludwig, '01. 



Floral parts. Stamens and pistils of Ficaria, MacLeod, 

 '98, '99, Ludwig, '01, Weldon, '01, Lee, '02; rays and bracts 

 and rays and disc florets of Aster, Shull, '02; various organs 

 on Lesser Celandine, Pearson and others, '03. 



Organs. r 



Num. rays and bracts. Aster 856 to .799 



stamens and pistils Ficaria ranunculoides, early. .. .507 .031 



late 749 .015 



rays and disc florets, Aster 574 to .353 



" petals and sepals Ficaria verna + . 34 to . 18 



" stamens and pistils, Celandine 43 to .75 



" petals. Celandine 38 to .22 



pistils and petals, Celandine 35 to .19 



sepals, Celandine 25 to .03 



" stamens and sepals, Celandine 06 to .02 



Other parts. Size of leaves of same rosette of Bellis peren- 

 nis, Verschaffelt, '99; various pairs of dimensions of fruits 

 and leaves, Harshberger, '01; parts of Syndesmon, Keller- 

 man, '01. 



HEREDITY. 

 General. 



Treatises. Galton, '89, Pearson, '00. 



Classification. Galton, '89, pp. 7, 12, Pearson and Lee, '00, 

 pp. 89, 91, 98. 



Law of ancestral heredity. Galton, '97, Pearson, '98; esti- 

 mate of heredity from a single ancestral generation, Pearson, 

 '96, p. 306. 



Inequality in parental transmission. Father prepotent in 

 sons; mother in daughters, Pearson and Lee, '00, p. 115; 

 heredity weakened by change of sex, Pearson and Lee, '00, 

 p. 115, Lutz, '03. 



