Freiburger historische Bestände - digital

134

Cunningham Memoirs.

Calori,* Meyer, -f and Rudinger,f have shown that the form of the head
exercises a very marked influence upon the direction of the fissures and
convolutions on the surface of the cerebrum. In sixteen cases in which
the angle of the Sylvian fissure was measured, the cephalic index was also
ascertained. A comparison of this with the angle has led me to believe
that the direction of the Sylvian fissure is little influenced by the configuration
of the cranium. We shall classify the results into two groups,
according to the cephalic index. Into the one group we shall place those
which present an index of 77 and under; in the second group we shall
place those in which the cephalic index is 78 and upwards. In this way
we shall the better see the relationship which exists between the cephalic
index and the Sylvian angle.

Eelation between the Form of the Head and the Sylvian Angle.

Group I.

Group II.

Cephalic Index 77 and less.

Cephalic Index 78 and upwards.

Cephalic Index.

Sylvian Angle.

Cephalic Index.

Sylvian Angle.

77

70°

80-7

67°

76-2

72°

80

70°

75-2

54°

79-2

65°

75-1

62°

79

65°

75

63°

79-2

72°

74-1

67°

78-3

66°

74

72°

78-2

67°

74

72°

78

65°

Average, 75

66°-5

79

67°-l

* "Del cervello nei due tipi bracbicephalo e dolicocephalo Italiani," Memorie dell' Accad.
delle Sc. di Bologna, 2. ser. t. x., Fasc. 1. 1871.

f "Ueber den Einfluss der Schadelforni auf die Bichtung der Grosshirnwindungen,''
Centralblatt fur die medicinischen "Wissenscbaften. Oct. 21, 1876, No. 43.

X Ueber die Unterschiede der Grosshirnwindungen nacb dem Geschlecht beim Fotus und
ISTeugeborenen. Miinchen, 1877.