PAPERS ON MEDICINE AND PUBLIC HEALTH 321 



was found that no records of morbidity or mortality in 

 twins were available. 



It is to be regretted that there are not more data at 

 hand concerning the development, physical and mental, 

 of twins during their later lives. To make such data 

 available, it would be important for obstetricians to re- 

 cord in every instance whether the twins originated from 

 one or two eggs, which information should also be sup- 

 plied to the families. Parents, physicians, teachers 

 should be able to furnish significant information. Twins 

 themselves, or their friends, might in some instances 

 contribute important biographical sketches, and life in- 

 surance companies and bureaus of vital statistics should 

 furnish details about the causes of death. Information 

 of this kind would be of great interest, if not of prac- 

 tical value, to a great number of people. Knowledge of 

 such facts would constitute a noteworthy contribution to 

 medical science. 



