CONTENTS 



AU Rights reserved 



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. PuNNETT. 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 R61e of 

 Oxydases in the Formation of the Anthocyan Pigments of Plants. 

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



The Journal of Oenetics is a periodical for the publication of records of original 

 research iu Heredity, Variation and allied subjects. The Journal will also, from time to 

 time, contain articles summarising the existing state of knowledge in the various branches 

 of Genetics, but reviews and abstracts of work published elsewhere will not, as a rule, be 

 included. Adequate illustration will be provided, and, where the subject matter demands 

 it, free use will be made of coloiired plates. The Journal will be issued in parts as material 

 accumiilates, and a volume, appearing, so far as possible, annually, will consist of four such 

 parts. 



Volume I (1910 — 11) is now ready. Price in four parts, paper covers, 30s. net ; bound 

 in buckram, 34s. 6d net. Buckram binding cases can be supplied at 2s. 6c?. net. 

 Subscribers' sets can be bound for 4s. &d., including the case. 



Papers for publication may be sent either to Mr Bateson, Manor House, Merton 

 Park, Surrey, or to Professor Pdnnett, Gonville and Gains College, Cambridge. Other 

 communications should be addressed to the University Press, Cambridge. 



Papers forwarded to the Editors for publication are understood to be offered to the 

 Journal of Oenetics alone, unless the contrary is stated. 



Contributors will receive 50 separate copies of their papers free. A further 50 may be 

 had at cost price : these should be ordered when the final proof is returned. 



The Subscription price for a volume is 30s. net (post free) payable in advance ; separate 

 parts 10s. each net. Subscriptions may be sent to any bookseller, or to Mr C. F. Clay, 

 Manager, Cambridge University Press, Fetter Lane, London, E.C. 



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



