29i4 ME. C. C. HUEST : EXPEEIMENTAL STUDIES 



normal parents, viz., a pigmented skin, coloured coat, dark eyes, 

 and normal demeanour. The ma-jority were self-coloured like 

 the original normals, while some were slightly marked with white 

 on the fore extremities, and a few were marked like the pure 

 Dutch rabbit. As will be seen later, these Dutch markings are 

 apparently not connected with simple albinism (see under 

 Sect. 4, p. 314). 



The following table gives the individual matings with the 

 details of each litter : — 



Table 11. 

 Hybrid Normals bred together (F^). 



Matings. Normal. Albino. 



H 5 X H 12 6 3 



H 5 X H 10 7 1 



H7 XHIO 4 4 



H7xH10 3 1 



H7xH10 7 2 



H7 xH12 8 2 



HSxHlO 8 1 



H 8 X H 10 8 1 



HBxHlO 8 1 



H8 X HIO 4 1 



H9 xHlO 8 



H 9 X H 10 5 2 



H 9 X H 10 6 2 



HOxHlO 7 1 



HOxHlO 7 2 



H9XH10 4 3 



' H9 xH12 6 4 



H 11 X H 12 6 2 



H 11 X H12 7 1 



Hll X H12 7 3 



H 11 X H 10 6 2 



Total 132 .39 



The normal hybrids of the first generation bred back with the 

 original albinos produced a mixture of normals and albinos in 

 Mendelian proportions. 



5 normal hybrids mated with 2 albinos produced 54 young, 

 of which 25 were normals and 29 were albinos. The Mendelian 



