1 70 
J. YAMANE. 
at the former farm and last year at the latter farm, the following results 
were secured : 
Abnormal 
sires 
No. I 
No. Ill 
No. 120 
No. 126 
Number of 
matings 
7 
16 
6 
3 
Abnormal 
offsprings 
5 
9 
2 
2 
lired at 
Kanei Farm 
Nemuro Farm 
Total 
32 
l! 
The calculation shows that of all the matings 56.3 % or nearly the 
theoretical 50 "/u t)elonged to the abnormal type. At all events the nicked 
character of the ears is either inherited or not inherited entirely. That is 
to sa\', there occurs a clear-cut segregation of the abnormality from the 
normality. 
In recapitulation, it may be said that the data dealt with in this paper 
show that the nicked ears seen in some families of the A\'rshire breed origi- 
nated at first in Scotland more than fifty years ago ; that this aural abnor- 
mality is transmitted in full accord with Mendelian principles ; that the zygo- 
tically different types DD and DR seem to be externally distinguishable in 
this case. 
I wish here to express my heartiest thanks to Prof. S. Hashimoto and 
Assistant-Professor Y. Tanaka, to whom I am indebted for valuable sugges- 
tions in completing this investigation. I am also under obligation to Mr. 
K, Takenouchi and many other breeders for their kindness in placing their 
herds and breeding-records at my disposal. 
From the Zootechnical Institute, 
College of Agriculture, 
Tohoku Imperial University. 
i) These sires are numbered in accordance with the breeding records of botli farms. 
