vi Contents 



No. 3 (November, 1912) 



PAGE 



L. DoNCASTER. The Chromosomes in the Oogenesis and Spermato- 

 genesis of Pieris brassicae, and in the Oogenesis of Abraxas 

 grossulariata. (With 15 Text-Figures) . . . . .189 



Clifford Dobell. Some recent work on Mutation in Micro- 

 organisms. Part I. (With 3 Text-Figures) .... 201 



R. C. PuNNBTT. Inheritance of Coat-colour in Rabbits. (With 



Plates XII— XIV, two coloured) 221 



A. H. Trow. On the Inheritance of Certain Characters in the 

 Common Groundsel — Senecio vulgaris, Linn. — and its Segre- 

 gates. (With Plates XV— XVIII, and 4 Text-Figures) . . 239 



Frederick Keeble and E. Frankland Armstrong. The Role of 

 Oxydases in the Formation of the Anthocyan Pigments of Plants. 

 (With Plate XIX, coloured, and 5 Text-Figures) . . .277 



No. 4 (February, 1913) 



A. H. Trow. Forms of Reduplication : — Primary and Secondary. 



(With 6 Text-Figures) 313 



Clifford Dobell. Some recent work on Mutation in Micro- 

 organisms. Part II. ....••• • 325 



K. ToYAMA. Maternal Inheritance and Mendelism. (First Con- 

 tribution.) (With Plate XX) 351 



