CONTENTS 



AU Rights reserved 



PAGE 



L. DoNCASTER. On the Relations between Chromosomes, Sex-limited 



Transmission and Sex-determination in Abraxas grossulariata. 



(With Plates I— III) 1 



R. C. PuNNETT and P. G. Bailey. On Inheritance of Weight in 



Poultry. (With Plate IV and 3 Text Figures) .... 23 

 H. M. Leake. A Preliminary Note on the Factors controlling the 



Ginning Percent of Indian Cottons . . . . . . ^ 41 



N. I. Vavilov. Immunity to Fungous Diseases as a Physiological 



Test in Genetics and Systematics, exemplified in Cereals . . 49 

 H. E. Jordan. Hereditary Lefthandedness, with a Note on Twinning. 



(Study III.) (With 80 Figures) 67 



George Harrison Shull. A Peculiar Negative Correlation in 



Oenothera Hybrids. (With Plates V and VI and 1 Text Figure) S3 

 M. Wheldale and H. Ll. Bassett. On a Supposed Synthesis of 



Anthocyanin .^ . . . . 103 



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CAMBRIDGE : PRINTED BY JOHN CLAY, M.A. AT THE UNIVERSITY PRESS 



