MUNIZ—MC GEE] OPERATION BY RECTILINEAR INCISION 29) 
the point of operation, displays a somewhat corroded and spongy 
appearance, indicating an abnormal condition during life, probably 
periostitis. Thus there is a suggestion that the operation was ante- 
mortem, and connected with a diseased condition; and there are indi- 
cations that the sufferer did not survive the treatment. 
This cranium displays also a few marks apparently due to old contu- 
sions or wounds, nearly obliterated by reparative process; the most 
conspicuous are clearly shown in the reproductions on the right and 
left of the operation in a somewhat higher horizontal plane (these may 
be pathologic); and there is a long vertical groove over the left temple. 
CRANIUM 3 
(Plates VI, VI1) 
{ This specimen is much weathered and eroded, no trace of tissue 
remains, and the weaker bones and processes are fragmentary or 
absent. The condition of the sutures indicates maturity. A single 
operation is displayed, revealing a thickness of bone varying from 
5 to 7 mm. 
The operation was pertormed on the right side of the crown, i. e., near 
the middle of the upper margin of the left parietal, apparently just 
involving the sagittal suture. While the condition of the skull is not 
such as to indicate the details of the operation, it evidently consisted in 
_making two pairs of approximately parallel orthogonal incisions, as in 
the previous cases. The aperture is large, averaging 35 by 40 or 42 
Inm., measured on the outer surface, and 2 or 3 mm. less in either 
dimension measured on the interior; but the transverse (and longer) 
dimensions can not accurately be determined, since the narrow selvage 
of bone between the superior longitudinal incision and the sagittal 
suture is lost. The incisions projected somewhat beyond their orthogo- 
nals, in one case so much as 8 or 9 mm., and the bone is well enough 
preserved to show that they were V-shape in section, narrowing and 
shallowing to the termini, as in the preceding specimens. 
There is nothing to indicate whether the operation was late ante- 
mortem or early post-mortem, no smoothing of sharp edges, no repara- 
tive growth, no indications of diseased condition of bone or periosteum, 
no definite trace or lesion other than that of the operation. 
CRANIUM 4 
(Plates VIII, TX) 
This specimen is bleached and somewhat weathered and broken, 
though in good condition about the locus of the single operation. The 
sutures are incipiently anchylosed, indicating maturity, though the 
posterior molars are immature. The cranium is much lighter and 
thinner than the average of the collection, being fairly comparable in 
this respect with the Caucasian normal; as revealed in the aperture, 
the bone ranges from 2 to 34 mm. in thickness. 
