ON HEEEDITY IN KABETTS. ll89 



Table 5. 

 Extracted Angoras x Pure Shorts (1*\). 



yjatinys. Short. Angora. 



EA lo X S 2o (J 



E A 15 X S ol 8 



E A ] 6 X S 0] 7 



J: S 04 X K A 37 fi 



Total 27 



The extracted Angoras, like the pure-bred Angoras, gave a 

 mixture of shorts and Angoras when mated with hybrid shorts. 

 -") extracted Angoras mated with 3 hybrid shorts produced 28 

 young, of which 17 had short coats and 11 Angoras. The Men- 

 delian expectation is 14 shorts and 14 Angoras. 



It will he observed that there \i here a slight excess of shorts, 

 which appears to be due to E H 28 giving 12 shorts and 6 

 Angoras instead of the expected 9 of each. The matings were 

 as follows : — 



Table 6. 

 Extracted Angoras x Hybrid Shorts (IV). 

 yiatinys. Short. Angora. 



E A l^j X HI 2 2 2 



E A lo X E H 28 -i 1 



E A 16 X E H 28 4 2 



E A IG X E II 28 1 



E A 20 X E Pi 28 2 2 



E A 33 X E H 28 2 1 



E II 3] X E A 26 3 3 



Total 17 11 



From the above experiments with 10 Angoras extracted from 

 hybrid shorts, it is clear that the extracted Angoras are not only 

 indistinguishable in appearance from pure-bred Angoras, but in 

 their breeding they behave exactly as do the pure-bred Angoras, 

 viz. : — (1) They breed true with one another ; (2) they are 

 recessive to pure shorts ; (3) they give mixed offspring when 

 mated with hybrid shorts. 



These facts are all in accordance with the Mendelian conception 

 of gametic purity, and there seems to be no doubt that, not- 

 withstanding their hybrid origin, these extracted Angoras a,re 



LINK. .TOLRX. — ZOOLOG-T. VOL. XXIX. 20 



