欧文抄録補足

(1) Study on the iris-pattern of single ovum twins.

　Having takeu the photogroph of the iris of 28 single ovum twins　（112 eyes）　and 8 double　　ovum twins（32 eyes），the author investigated the iris-pattern in twins．

　1）　According to Prof．　Kunitomo's classification, the types of the homonymous eyes of　each couple coincide with each other in all sinfile ovum twins　（56／56）（100％）．On the　contrary, in double ovum twins they do in the prrportion of only 50％．