152 Bulletin No. 155. — 1913. 



3. Relation of the White Leghorn factor I to factor / of the 

 Brown Leghorn (Bateson and Punnett) p. 211. 



4. Occurrence of the factor for barring in breeds possessing the 

 R-white p. 212- 



V. Summary and Conclusions p. 213. 



VI. Literature Cited p. 215. 



VII. Description of Plates p. 216. 



