U. S. C. A ND G. SVRl '£ ] '. 



I'KEIHi, TORIC TREI'IIINING, rt. 111. 



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Fifi. 1. Perforating fracture of the left parietal near its posterior superior angle; internal ^^ew showing the de- 

 pressed fragment of the internal table which has reunited. Fig. 2. Result of injury to right frontal and parietal 

 region, causing extensive sinuses between tht^ inner and outer table. Natural size. (Laugdou.) 



