THE HUMAN STERNUM 65 



In conclusion, one may point out that there still remains a great deal 

 that is uncertain and problematic in regard to this question. One has only- 

 succeeded in partially covering the ground in the foregoing pages ; and the 

 teratological aspect of the subject has not been personally investigated at 

 all. The observations recorded and the general interest arising out of the 

 study of the various problems associated with them appear to me to be 

 enough to warrant the attention they have received, and to justify my 

 taking advantage of this opportunity to formulate my views on a subject 

 which has occupied my attention for several years. 



