FEACTUEE OF FIEST EIB. 



311 



Fig. 123. 



Recent fracture of 



first rib. 



Fig. 124. 



Sound first rib, and fractured 



first rib undergoing repair. 



Fig. 125. 



Pair of first ribs ; one sound, the 



other united after fracture. 



Fig. 126. 



Pair of first ribs ; both united 



after fracture. 



