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

 1883 10 x 10 Gypsum

S9.4

 Quartic with 12 A1 double points 1883 11 x 11 Gypsum

S9.5

 Quartic with four D4 double points 1883 10 x 10 Gypsum

S9.8

 n.a. 1883 9 x 9 x 6 Gypsum