250 Cincinnati Society of Nataral History. 
There are two cases of marked indentation of both tables in the poste- 
rior parietal region, both evidently the result of blows from a blunt 
instrument ; one of these is shown in fig. 4. 
A marked indentation near the apex of the vertical plate of the 
frontal bone, probably from same cause as the preceding. 
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Fig. 4. Depressed fracture of both tables, followed by repair. 
Two specimens exhibit perforation of the left parietal, near its 
posterior border, with marked depression of the inner table ; in both 
of them recovery has apparently ensued, as the openings are partially 
af. | — 
Lad 
of 
Fig. 5. Perforating fracture of the left parietal near its posterior superior angle; internal 
view, showing the depressed fragment of the inner table, which has re-united. 
(Natural size). 
closed by new bony deposit, and the remaining edges nicely rounded 
off. One of these, showing the depressed fragment of the inner table, 
is represented in fig. 5; the other in figs. 6 and 6a. 
