46 Injuries of Bone. 



with a distinct depression in the centre of the wound. The injury was 

 caused by a quoit, thrown from a distance of about 20 yards before 

 it struck the skull. There was a rise of temperature and threatening 

 of erysipelas on the fourth day after admission, but absolutely no other 

 symptoms. On August 15th the wound had healed, except for about an 

 eighth of an inch. On the evening of the 16th he made up his own bed 

 and said good-night to the men in the ward. At about 8 A.M. the next 

 morning he was found to be insensible, with stertorous breathing, and died 

 in about an hour. At the post-mortem examination, recent lymph was 

 found all over the surface of the left hemisphere, and about two drachms 

 of pus below the fracture of the inner table. The dura mater was intact, 

 and the brain substance beneath the fracture was not affected. The 

 fissure from the depression to the edge of the bone was caused when 

 removing the skull-cap. The curious part of the case is the absence of all 

 symptoms. There were no eye or pulse symptoms and no pain. The 

 treatment was local, with rest in bed and low diet." 



This resembles what has been called " pond " fracture, with, 



in addition, the dint produced by the quoit. The more 



extensive splintering of the inner table is characteristic. 



G. C. 3435. 



Presented by B. LanCxLEY Mills, F.R.C.S.E., The Cake, Chakrata, 1892. 



3. 19. Depressed Fracture of Parietal Bone.— Portion of a 



left parietal bone — macerated — showing a depressed fracture 

 and trephine opening. 



A circle of bone has been removed with the trephine, but 

 the depressed bone has not been raised. Had the depressed 

 part been sawn through, elevation would have been possible 

 from the trephine opening (8ir Charles Bell). 



B. C. 1. 2. M. 10. 



3. 20. Comminuted Fracture of Parietal Bone.— Calvarium 

 — macerated — to show a fracture of the right parietal bone 

 and a trephine opening beside it. 



The fracture had apparently been produced by a blow, and 

 some of the pieces had probably been depressed. The trcpliine 

 opening evidently was to permit the elevation of some of the 



