Nr. 76
Curve of 4. order as slice
Row: 1

Nr. 122
Cylindroid made of carton discs
Row: 1

Nr. 77
Right-angled paraboloid
Row: 1

Nr. 78
Cylindroid
Row: 1

Nr. 79
Cylindroid combined with a right-angled paraboloid
Row: 1

Nr. 80
Cone of third order
Row: 2

Nr. 82
Cone of third order
Row: 2

Nr. 83
Cone of third order
Row: 2

Nr. 81
Cone of third order
Row: 2

Nr. 84
Cone of third order
Row: 3

Nr. 85
Cone of third order
Row: 3

Nr. 86
Cone of third order
Row: 3

Nr. 123
Kummer surface with 8 real double points
Row: 4

Nr. 124
Kummer surface with 16 double points
Row: 4

Nr. 125
Kummer areas with 8 respectively 16 respectively 4 real intersections
Row: 4