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DRAPERS' COMPANY RESEARCH MEMOIRS. 



DEPARTMENT OF APPLIED MATHEMATICS, UNIVERSITY COLLEGE, 

 UNIVERSITY OF LONDON. 



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Biometric Series. 



Mathematical Contributions to the Theory of Evolution. — XIII. On the Theory of Contingency and its 



Relation to Association and Normal Correlation. By Karl Pearson, F.R.S. Issued. Price 4s. 

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Migration. By Karl Pearson, F.R.S., with the assistance of John Blakeman, M.Sc. Issued. Price 5s. 

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Correlation. By Karl Pearson, F.R.S. Issued. Price is. 

 .Mathematical Contributions to the Theory of Evolution. — XVII. On Homotyposis in the Animal Kingdom. 



By E. Warren, D.Sc, A. Lee, D.Sc, Edna Lea-Smith, Marion Radford and Karl Pearson, F.R.S. Shortly. 



Studies in National Deterioration. 



I. On the. Relation of Fertility in Man to Social Status, and on the changes in this Relation that have take 



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BIOMETEIKA. 



A JOURNAL FOR THE STATISTICAL STUDY OF BIOLOGICAL PROBLEMS. 



Founded by W. F. R. Weldon, Francis Galton and 'Karl Pearson. 



Edited by Karl Pearson in Consultation witb Francis Galton. 



Grades and Deviates. By Francis Galton, with a 



Table of Deviates by W. F. Sheppard. 

 A Cooperative Study of Queens, Drones and Workers in 

 Yespa Vulgaris. (With Plate.) By A. Wright, A. Lee 

 and Karl Pearson, F.R.S. 

 .Statistical Studies in Immunity. A Discussion of the 

 Means of estimating the severity of cases of Acute 

 Disease. By John Brownlee, M.D., D.Sc. 

 On Heredity in Mice from the Records of the late 

 W. F. R. Weldon. Part I. On the Inheritance of 

 the Sex-Ratio and of the Size of Litter. 

 (i) On the Distributaon oi Severity of Attack in y IL Thc Calculation of the Moments of a Frequency-Distri- 

 ( 'ascs of Smallpox. By F. M. Turner, M.D. (u) Remarks button. By W F. Sheppard. 



on Dr Turner's Note. By Karl Pearson, F.R.S. 



Supplement to Vol. V. Anthropometric Survey of the Inmates Miscellanea : (i) On the Inheritance of Psychical Characters. 



Of Asylums in Scotland. (With Maps.) By J. F. Tocher. , Being f urt her Statistical Treatment of Material Collected 



Issued by permission of the Henderson Trustees. ;m d Analysed by Messrs Heymans and Wiersma. By 



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I. Statistical Observations on Wasps and Bees. By F. V. ] (») "eply to certain criticisms of Mr G U. Yule. (With 



Edgeworth. ' ! „ ^.coloured Plate.) By Karl Pearson, F.R.S. 



II. Natural Selection in Iklix Arbustomm. By A. P. di Notices and Bmhograpby. 



Cesnola. 



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