284 



Third Report oii C/oss-bred Mice 



3. I have made one cross between a pure-bred waltzing mousf (/ and an 

 albino $ extracted from crosses between albinos and hüuse-niice. The albinu 

 was given me by Professor Cu^not : and I wish to take this opportunity for 

 thanking hini for bis courtcsy and kindness to me. The ancestry of the albino is, 

 in Professor Cuenot's words, as foUows: 



(J grit tauvage 



9 blanche 



9 grise 



Albinv 9 



That is to say the ainonnt d' wild-cciloiir in thu aucestry is very great : tbc 

 seven ufFspring prodviced by thi.s inouse crossed with a waltzer were all coinpletely 

 wild-Cüloured. 



4. So far we have been considering the colour of thosc portions of tbc coat 

 which were not white. 



The correlation between the amount of white in the coats of hybrid grand- 

 parent, pareut of albino, and its graudchildren is givcn in Table III. 



* WhicU pareut was white and which grey is not kuown. 



