TABLE XVII. 
FIG. I. 
The infide of the ftemum. 
A A A A Four diftinB bones . 
B Cartilago enfformis. 
C C C The ends of the ribs joining to the cartilages of the ftemum. 
F I G. II. 
The external view of part of another ftemum. 
A A, &c. Five diftinB bones of the ftemum. 
B One cartilage dividing to two ribs , which is not a very uncommon lufus natura. 
C An imperfeB cartilage. 
D A perforated cartilago enfiformts. 
