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Mr. Victoe Horsley— Cranio- Cerebral Topography. 327

Observer.

No. of Cases
Examined.

Distance of Rolando (upper end) from Coronal Suture.





/

4'7 (mean) ; min. 4; max. 5'4.

Giacomini,





Brachyceph., 54-4. \

\ Eel.
Dolichoceph., 55-0. j

Poirier, ....

'large number.'

(

4*8 cm.





5-16 (mean).

Passet, ....





( Brachyceph., 5-66.

Males,

( Dolichoceph., 4-83.





'

( Brachyceph., 5-08.
Pemales, ]

( Dolichoceph., 5-13.





5-28 mean.

Chiarugi,

12

1

/

Brachyceph., 5*35.
Dolichoceph., 5'22.
4-955.

Le Port,



\

Brachyceph., 4-8.
Dolichoceph., 5'1.

Dana, ....

Children.



Either "55 of total length, or as follows :—
In one case 3 cm. behind bregma.
%> ii 3*8 ,, ,,
4-0

ii >» ^" ii ii

Regarding the variations produced by external deformity of the cranium,
Broca found in the flat head of Toulouse that the upper end of the fissure
was carried backwards, being 5*7 cm. from the coronal suture, whereas the
maximal normal previously observed by him had been 5*6 cm., and the
average 4-7.

Ecker was not able to exactly determine this difference in the Vancouver
flat head, owing to failure of material.

FeVe" states that in plagiocephaly the upper end of Rolando moves
forwards on the side on which the parietal boss is most prominent. This, of
course, is in harmony with the fact that that is the brachycephalic side.
The diff erence on the two sides amounted to about 0"4—0*5 cm.