vi ContentH 



Nn. ?, (Januaiy, 1915) 



PAGK 



Frank C. Miles. A Genetic and Cytological Study of Certain 

 Types of Albinism in Maize. (With Plate VIII, and 9 Text- 

 Figures) 19;^ 



H. M. Fucil.s. Studias in the Plivsiology "f Fertilization . . 215 



No. 4 (April, 1915) 



R. P. Gregory. Note on the Inheritance of Heterostylisni in 



Primula acaidis Jacq. ........ 303 



R. P. Gregory. On Variegation in Primn.Ut sinensis. (With 



Plates IX and X) 305 



H. Dkinkwater. a Second Bracliydactylous Family. (With Plates 



XI— XV, and 3 Text-Figures) 323 



C. J. Bond. On the Priniar}' and Secondary Sex Characters of 

 some Abnormal Begonia Flowers and on the Evolution of the 

 Monoecious Condition in Plants. (With Plates XVI and XVII) 34 1 



R. RuGGLEs Gates. On the Origin and Behaviour of Oenothera 



ruhricalyx . . . . . . . . . .353 



Arthur Ernest Everest. Recent Chemical Investigations of the 

 Anthocyan Pigments and their bearing upon the Production of 

 these Pigments in Plants . . . . . . . .361 



M. Wheldale. Our Present Knowledge of the Chemistry of the 



Mendelian Factors for Flower-Colour ..... 369 



ERRATA. 



Page 92, line ">,y'o/' "obvate" r"ad "ovate." 



Page 104, line 4, for " + sugar x (rtavono)" read " + sugar .)• (flavone)." 



Page 105, line 9, /')/• "witli roiiioval of sugar.s" read "vVilhout removal of .sugars." 



