i- The proximal end of a middle left rib. A from the front, B from behind, C from below, and D from above. In A 

 tin Imc / marks the attachment of a fascia continuous with the inner intercostal muscle and therefore the " jKisti-riiir 

 inUTiostul fascia " : it separates the pleural surface (p) from the area x which supports fatty tissue. Above this tin- 

 nerve (A ) runs through the tissue in front of the ligament. The External Intercostal is prolonged back as an aponeurotic 

 hrrt along B to the ligament. In Fig. B observe the different direction of the fibres of the upper ligament seen from 

 behind : LC, Levator costae, E and EE are External Intercostals of upper and lower spaces respectively, MCT is middle 

 'transverse ligament. Iliocostalis and accessorius are attached just internal to the vertebral aponeurosis, and 

 Longimimua between LC and EE. In C and D the references are as in the other figures. A' A' and A A in < 

 corresponding with A" and A on the upper aspect of the rib below. E is from a dissection showing the strurtiirrs 111 

 relation with the dorsal parts of the ribs. In one space the inter-transverse muscles have been removed, and the posti-rmr 

 division of the nerve is seen dividing into outer and inner branches : the former turns out between the superior costo- 

 transverse ligament and the Inter-transverse muscles to appear on their outer side, while the inner branch runs back round 

 the articular processes. Compare the arrangement of the muscles with Fig. B : also observe that the lower Levators are 

 partly continuous with the outer Intercostal muscle in the next space. 



