74 THE HUMAN STERNUM 



Table VII. — Ossification of the Mesosternum ; 141 cases, o — 16 years inclusive 



Table VIII. — Fusion of Mesostemal Elements together. Percentages 



Age 



No. of 

 cases 



Normal process 



I-2-3 



or 



I-2-3-4 



i'2-3 + 4 



1-2 + 3 



or 



1-2+3 + 



4 



1 + 2 + 3 



or 

 1+2+3 



+ 4 



Usual condition 



1-5 

 6-10 



11-15 



16-20 



21-25 



29 



•7 

 23 

 59 

 36 



82-7 



64-7 17-6 

 82-3 



347 I 1 3-0 



477 



22-0 I 5-0 

 27-0 



3-4 



5-8 



26-0 



6-9 



5-8 



■7-3 



43-3 

 25-4 I 40-6 



n^l^-3 

 97-1 



All separate 



(•3 or 4 pieces : 

 •! first three sep- 

 tarate. 



, 1-4 pieces : 

 \ first two sepat- 

 late. 



\ I -4 pieces : 

 (first separate. 



I 1-2 pieces : 

 [all fused. 



