66 Injuries of Bone. 



3. 68. Dislocation and Fracture between the fourth and 



fifth Cervical Vertebrae — Upper five cervical vertebrae, 

 spines and laminse removed, the dura mater opened, and 

 a longitudinal section made of the spinal cord. The muscles are 

 partly cleaned away, and the preparation is in spirit. 



The spinal cord has been crushed opposite the interval 

 between the bodies of the fourth and fifth cervical vertebrae. 

 The fifth vertebra is attached to the fourth only by the- 

 nerves of the spinal cord. G. C. 2056. 



Presented hy Alexander Watson, F.R.C.S. E. 



3. 69. Complete Dislocation forwards of the Body of the 

 fourth Cervical Vertebra, with partial Fracture of 

 its Laminae. — Section to the left of the middle line of the 

 upper six cervical vertebrae, showing the above — in spirit. 



The spinal cord has been crushed between the laminae of 

 the fourth and the body of the fifth vertebrae. Xote the com- 

 paratively small irregularity of the spinous processes, which is 

 compatible with such a serious pressure upon the cord by the 

 dislocation of the bodies. G. C. 2095. 



Presented hy Alexander Watson, F.R.C.S.E., 1839. 



3. 70. Fracture and Dislocation of the fifth and sixth 

 Cervical Vertebrae, with Fracture of the fourth and 

 fifth Spines. — Lower six cervical vertebrae, with the muscles 

 cleaned off — in spirit, showing the above injury. 



" J. S., ret. 45, fell backwards from a height of four feet, and landed 

 on the back of his neck against an iron railing. 



"The house surgeon reports of this man that -when he was 

 brought into the Hospital he was perfectly sensible ; that his face 

 indicated great alarm and anxiety. Every time he drew his breath it 

 was attended with an effort to raise his shoulders, and a contraction of 

 the muscles of the throat. Every time he breathed liis head appeared 

 to sink beneath his shoulders. On putting the hand on the pit of his 



