

CONTENTS. 



Memoirs. 



PAGE 



I. Oll the Systematic Fitting of Curves to Observations and Measnre- 



ments. Part II. By Kaiu, Pearson, F.R.S 1 



II. Quantitative Study of the Effect of Environment upon the Forms 

 of Xassa obsoleta and Xuxsa trivittuta froni Cold Spring Harbor, 

 Long Island. By Abigail Camp Di.mon 24 



III. ün the Ambiguity of Mendel's Categories, By \V. F. R. Weldox, 



F.RS U 



IV. Cooperative Investigatioiis on Plants : I. On Inhiiitaiice in the 



Shirley Poppy .......... 56 



V. On the Number and Arrangement of the Bony Plates of the 



Young John Dory. By L. W. Bykxe 11.') 



VI. Notes on the Theory of Association of Attributes in Statistics. 



By G. Udny Yule 121 



VII, A Further Study of Statistics rehxting to Vaccination and Siiiall- 



pox. By \V. R. Macdonell 135 



VIII. Cooperative Investigations on Phmts : II. Variation and Correlation 



in Lesser Celandine l'roni divers localities . . . .145 



IX. Second Report on the Result of crossing Japanese Waltzing Mice 



with European Albino Races. By A. D. Dakbishire . 165 



X. New Tables of the Probability Integral. By \V. F. Siieppakd . 174 



XI. Variation in .£^H/)0(7H7-HÄ Pnrfea (M'ii Heller. By E. H. J. Sciu'steu 191, 



Xll. The Lixw of Ancestral Heredity. By Karl Pearson . .211 



Appendix II. On Inheritance (Grandparent and Offspring) in 

 Thoroughbred Racehorses. By Norman Blanchard . . 229 



Appendix III. On Inheritance (Great-Grandparents and Great- 

 Grcat-Grand])arents and Offspring) in Thoroughbred Race- 

 horses. ]iy Alice Lee 234 



