Series IX

Number

Title

Date of Design

Dimension (cm)

Material

S9.1

Quartic with six A3 double points

1883

11 x 11

Gypsum

S9.2

Quartic with six A3 double points

1883

10 x 10

Gypsum

S9.3

Quartic. Steiner's Roman surface

188310 x 10Gypsum

S9.4

Quartic with 12 A1 double points188311 x 11Gypsum

S9.5

Quartic with four D4 double points188310 x 10Gypsum

S9.8

n.a.18839 x 9 x 6Gypsum