TWINS AS DIFFERENT AS ANY SISTERS 



These little twin sisters have grown up together in the same surroundings and under the 

 same influences; even their prenatal influenecs were the same. Yet they are so unlike 

 as to be almost opposite in every characteristic, so much so that their education and manage- 

 ment has been quite a problem. 



These two girls, born at practically the same time, of the same parents, and yet with such 

 different characteristics, illustrate clearly the difference between identical parentage and 

 identical heredity. Both are mixtures of the same two human stocks — the maternal with 

 its long line of ancestors and the paternal with its own line. But each girl is a different 

 mixture or combination of these stocks — in one more of the paternal perhaps and in the 

 other more of the maternalappears. They doubtless arose from separate egg cells. (Fig. 9.) 



